cmd: show test in journal vacuum

It's unclear what's 'basic', so `basic/` notes have been mostly moved.
The remainder became `shell/`.

.gitignore

@@ -1,3 +0,0 @@
-*.pdf
-*.gif
-*.jpeg

Makefile

@@ -1,8 +1,19 @@
 MAKEFLAGS += -j
 MAKEFLAGS += -s
 EDITOR ?= vi
-FZF != command -v sk || command -v fzy || command -v fzf || \
-	{ echo install a fuzzy finder && exit 1 ;}
+PAGER ?= less -Ri
+READER != command -v mdless bat glow less more pg | head -1
+FZF != command -v fzf sk | head -1
+
+markdown = $(wildcard */*.md */*/*.md)
+
+ifeq "$(FZF)" ""
+  $(info Install fzf)
+endif
+
+ifeq "$(FZF)" "/usr/bin/fzy"
+  FZF += -i
+endif
 
 spill_contents = sed -e '1,/---/d'
 
@@ -13,69 +24,103 @@ help: ## Print the help message
 
 articles != find * -type f -name "*.md"
 
-dirs != ls -d */
-categories = $(patsubst %/, %, $(dirs))
+default += .dbs/notes.rec
+default += .dbs/map.fmt
 
-databases = $(patsubst %, .dbs/%.rec, $(categories))
 
-default += $(databases)
-
-$(foreach dir, $(categories), \
-	$(eval .dbs/$(dir).rec: $(wildcard $(dir)/*)) \
-	)
-
-.dbs/:
+%/:
 	mkdir $@
-$(databases): .dbs/%.rec: %/ | .dbs/
-	$(info making $(@F))
-	for entry in $(shell find $< -type f -name "*.md") ; do \
-		printf "file: %s\n" "$$entry" ;\
-		sed -n '2,/^---$$/ {/^---$$/d; p}' "$$entry"  |\
-		tr -d '[]' | tr -s ' ' |\
-		sed '/tags: /s/, /\ntag: /g ; s/tags:/tag:/ ; /requires/s/, /\nrequires: /g' ;\
-		printf "wordcount: %s\n\n" "$$(wc -w < $$entry)" ;\
-	done > $@
+	echo '*' > $@.gitignore
 
-# This two-variable read can only happen because of the quotes in the titles.
-db.rec: $(databases)
+include cmd.mk
+
+.dbs/head.rec: | .dbs/
 	printf '%s\n' '%rec: guide' > $@
-	printf '%s\n' '%key: title' >> $@
+	printf '%s\n' '%key: path' >> $@
 	printf '%s\n' '%type: requires rec guide' >> $@
 	printf '%s\n' '%type: provides rec guide' >> $@
 	printf '%s\n' '%type: wordcount int' >> $@
 	printf '%s\n\n' '%sort: wordcount' >> $@
-	cat $^ >> $@
-	recsel $@ -e "requires != ''" -CR title,requires |\
-	while read title requires; do \
-		for provider in "$$requires" ; do \
-			recset $@ -e "title = '$${provider}'" -f provides -a "$${title}" ;\
-		done ;\
-	done
-	sed -i 's/"//g' $@
-	recfix --sort $@
-	$(info Created main database: $@)
+
+.dbs/new.rec: $(markdown) | .dbs/head.rec
+	$(info Updating: $?)
+	grep -q guide $@ 2>/dev/null || cp $| $@
+	@-$(foreach entry, $?, \
+		recdel -t guide $@ -e "path = '$(entry)'" 2>/dev/null ;\
+	)
+	for entry in $? ; do \
+		echo '' ;\
+		printf "path: %s\n" "$$entry" ;\
+		sed -n '2,/^---$$/ {/^---$$/d; p}' "$$entry"  |\
+		while read -r line; do  if [ -z "$${line#*:}" ] ; then type="$$line"; else echo "$$line" | sed -r "s/- (.*)/$$type \1/" | sed s'/tags: /tag: /' ; fi ; done ;\
+		printf "wordcount: %s\n" "$$(wc -w < $$entry)" ;\
+		echo 'cmd: ' ;\
+		sed '1,/^---$$/d' $$entry | sed 's/^.*/+ &/' ;\
+		echo '' ;\
+	done >> $@
+
+.dbs/requires.rec: .dbs/new.rec
+	recinf -d $< > $@
+	echo "" >> $@
+	recsel $< -t guide -j requires -G requires -p 'path,title,tag,wordcount,requires_path:requires,requires_requires:requires,cmd' >> $@
+
+.dbs/notes.rec: .dbs/requires.rec .dbs/new.rec
+	recinf -d $< > $@
+	echo '' >> $@
+	sed '/^%/d' $^ | recsel -G path | recsel -U >> $@
 
 default += db.rec
+ignored += db.rec
+db.rec: command.rec .dbs/notes.rec
+	recinf -d $< > $@
+	echo '' >> $@
+	sed '/^%/d' $^ | recsel -U -p 'title:aim,aim,cmd,note,shell,tag,bin:tag' >> $@
+	$(info Making main database: $@)
 
-.git/info/exclude: $(default)
-	echo $^ | tr ' ' '\n' > $@
+
+.git/info/exclude: $(ignored)
+	@echo $^ | tr ' ' '\n' > $@
 
 default += .git/info/exclude
 
 .PHONY: database
 database: $(default) ## Make a recfiles database
 
-.PHONY: article
-article: ## Write an article
-	@path=$$(find $(categories) -type d | sort | uniq | $(FZF)) ;\
-	read -p "Title: " title ;\
-	filename="$$(echo "$$title" | tr '[:upper:]' '[:lower:]' | tr ' ' '_')" ;\
-	printf '%s\n' '---' >> $$path/$$filename.md ;\
-	printf 'title: "%s"\n' "$$title" >> $$path/$$filename.md ;\
-	printf 'tags: [ "%s" ]\n' "$$path" | tr '[:upper:]' '[:lower:]' | sed 's#\/#", "#g' >> $$path/$$filename.md ;\
-	printf '%s\n\n' '---' >> $$path/$$filename.md ;\
-	$(EDITOR) +5 "$$path/$$filename.md"
+.dbs/map.fmt:| .dbs/
+	printf '%s\n' '[ {{requires[0]}} ] --> [ {{path}} ] {border-style: dashed;}' > $@
+	printf '%s\n' '[ {{requires[1]}} ] --> [ {{path}} ] {border-style: dashed;}' >> $@
+	printf '%s\n' '[ {{requires[2]}} ] --> [ {{path}} ] {border-style: dashed;}' >> $@
+	printf '%s\n' '[ {{requires[3]}} ] --> [ {{path}} ] {border-style: dashed;}' >> $@
+	printf '%s\n' '[ {{requires[4]}} ] --> [ {{path}} ] {border-style: dashed;}' >> $@
+
+.PHONY: map
+map: .dbs/requires.rec .dbs/map.fmt ## Show knowledge dependency map
+	recsel -t guide $< -e 'requires != ""' -p path,requires | recfmt -f .dbs/map.fmt |\
+	grep -vF '[  ]' | graph-easy --boxart 2>/dev/null | ${PAGER} -S
 
 .PHONY: clean
 clean: ## Remove all generated files
-	$(RM) $(default)
+	$(RM) -r $(default) .dbs/
+
+.PHONY: article
+article: */ */*/ ## Write a new article
+	category=$(shell echo $^ | tr ' ' '\n' | $(FZF) --print-query | tail -1 ) \
+	&& read -p "Article title? " name \
+	&& filename="$$(echo "$$name" \
+		| cut -d: -f1 \
+		| tr '[A-Z ]' '[a-z_]' | tr -cd '[:alpha:]_' )" \
+	&& $(MAKE) -e TITLE="$$name" "$$category"/"$$filename.md"
+
+.PHONY: all
+all: $(default) ## All file targets
+
+
+%.md: 
+	[ -d "$(@D)" ] || mkdir $(@D)
+	printf '%s\n' '---' >> $@
+	printf 'title: %s\n' '$(TITLE)' >> $@
+	printf "tags: " >> $@
+	echo $(@D)  | sed 's#\b\w#\n- &#g; s/\///g' >> $@
+	printf '%s\n\n' '---' >> $@
+	$(EDITOR) +5 $@
+

README.md

@@ -1,61 +1,98 @@
----
-title: "Linux Knowledge Base"
----
+# Linux Knowledge Base
 
-The Linux Knowledge-Base provides quick-start guides for working with terminal programs.
+These notes Linux programs have grown into a searchable knowledge base.
 
-If you like this style of short articles with a miniature database, then join me in my quest to remove the nausea of poorly-written documentation.
+# Usage
 
-# Setup
+## Setup
 
-Install `make`, `recutils`, and any fuzzy-finder (i.e. `sk`, `fzy`, or `fzf`).
+Install `make`, `recutils`, and any a fuzzy-finder (like `fzf` or `sk`).
 
-## Usage
+To find the options, run `make`.
+
+## Queries
+
+The fuzzy finder opens an interactive menu to find information.
+
+There are two types of notes:
+
+1. Short commands, catalogued by aim (in `command.rec`).
+1. Short notes, mostly on getting set up with something (in the markdown files).
+
+### Short Commands
+
+Running `make check` will start a search of the snippets, ordered by what you
+want to do, not by the name of the binary:
+
+```
+    Hard reset ntp service
+ -> Quickly find and open run-command files
+    Turn markdown into a man page
+    Rotate a video
+    Translate a media file to a new type
+```
+
+The output is a couple of lines of code, with changeable components as variables:
+
+```
+alias rrc='$PAGER "$(find . -maxdepth 2 -name "*rc" | fzf)"'
+```
+
+### The Function
+
+Running `make function` outputs a shell function which searches through this
+knowledge base, so you don't have to `cd` to use it.
 
-Set up the database and try a few queries:
 
 ```sh
-make
-make database
+lk(){
+	/usr/bin/mdless "$(recsel ${your-path-here}/lk/db.rec \
+    -q "$(recsel ${your-path-here}/lk/db.rec -CP title,tag \
+    | sort -u \
+    | /usr/bin/fzf )" -CP path \
+    | fzf --sync -1 --preview='less -iR {}' )"
+}
+```
 
-recsel db.rec -m 3
-recsel db.rec -q database
-recsel db.rec -e "title = 'ssh'"
-recsel db.rec -e "title ~ 'ssh'"
-recsel db.rec -e "title ~ 'bash'" -R title,wordcount
+Add the function to your bash shell like this:
 
-recsel db.rec -t guide -j provides -G title \
-    -e "title = 'ssh'" \
-    -p 'sum(provides_wordcount)'
+```bash
+make function
+make function >> ~/.bashrc
+exec bash
+lk
 ```
 
 # Style
 
-## No History, No Context
-
-- Nobody cares about how the project started.
-- Nobody wants to read what `ffmpeg` is, because anyone who wants to use it already knows what it is.
-
 ## State Knowledge Dependencies
 
-Articles should state what you need to understand in order to read them *at the start*.
-They should not assume the reader knows much beyond common terminal commands, and should not provide a link to some other resource half-way through an article.
+Articles should never link to other resources part-way through.
+If the article assumes an understanding of GPG keys, then it should say that at the top.
+People should be able to read documentation from the beginning, then keep going until the end, and then stop.
+Setup guides should not send the reader on a detour through labyrinths of links.
 
-People should be able to read an article from the beginning, then keep going until the end, and then stop.
-Articles should not take a detour through a chain of other articles of unknown size.
+## No History, No Context
 
-[Do not Jaquays documentation](https://splint.rs/posts/no_links)
+Anyone who wants to read how to use OTP with GPG already knows what those words mean, so guides should not spend time explaining.
+Anyone who doesn't know what GPG keys are can find the link to using them, which explains them better than using door-blocking devices as a metaphor for prime number factorization.
+
+## Index by Purpose
+
+Nobody wants to read about `grep`, they want to find words, like 'cat'.
+They want to 'download a website', not learn about `wget`.
+Guides should be created and indexed by purpose, not by binary.
 
 ## Be Opinionated
 
-- Guides should not ask the reader to select options half-way through.
+- Guides should not ask the reader to pick from a list of options.
 - Options for different filesystems, databases, et c., should be written as separate guides.
 
 ## Repetition Beats Reference
 
 If a database requires three commands to set up, it's better to repeat those three commands for every program that requires a database than to just link to another file which discusses databases.
 
-## Show Arguments as Variables
+## Show Options as Variables
 
 Look at this line:
 
@@ -82,28 +119,61 @@ The answer is not obvious.
 It's better to make all arbitrary values variables.
 
 ```sh
-git branch $branch_name
-git checkout $branch_name
+name=new
+git branch ${name}
+git checkout ${name}
 PAGER='less -R'
 grep ls --color=always $HISTFILE | $PAGER
 ```
 
 Now we can see what can be changed.
 
-## Assume People Follow the Instructions
+### Aim to Script
+
+Guides should read like a heavily commented script, so CLI commands are preferred to GUI commands.
+
+- Bad: '*edit the file `.config/tspreed/tspreed.rc` and change `focuscolor` to '2'.*'
+- Good: `sed -i '/focuscolor/s/=1/=2/' ~/.config/tspreed/tspreed.rc`
+    * `cat !$`
+
+Despite being 'script-like', interactive bash commands like `cat !$` are still fine just to show how to double-check results when setting things up interactively.
+
+### Show, Don't Tell
 
 Articles should say what to type, not the output.
 If the command is `ls`, users will see files once they try the command, but the article does not need to provide an example list of files unless an important point has to be made about output.
 
+Once a user enters a new group, the change doesn't take effect until you log
+in.  This could be explained at length, or the reader can see what this means
+for themselves:
+
+
+```sh
+groups
+grep audio /etc/group
+
+sudo usermod -aG audio $USER
+groups
+grep audio /etc/group
+
+su $USER
+groups
+grep audio /etc/group
+```
+
+Troubleshooting steps can often be implied by adding commands which do nothing but check the results of previous commands.
+
 # What's Wrong with Everything Else?
 
+Why bother writing yet another cheat-sheet collection?
+
 ## Man pages
 
 - Orders items by the alphabet rather than by relevance.
 - Often presumes you know everything except that one program.
 - Often written in the 80's, and it shows.
 - Zero respect for your time.
-- Often references `info` pages (yuck).
+- Sometimes reference `info` pages (yuck).
 
 ## `curl cheat.sh`
 
@@ -114,9 +184,6 @@ If the command is `ls`, users will see files once they try the command, but the
 
 # Current State
 
-This started as a few personal notes, and will probably continue to look like that for some time.
 It's a bit of a mess.
-
-Systemd is taken as a default.
-Non-systemd commands are mentioned when required for a distro, e.g. runit for Void Linux.
+If you like the format, send me a pull request.
 

basics/basics.md

@@ -1,360 +0,0 @@
----
-title: "Basics"
-tags: [ "basics" ]
----
-
-You need about a dozen commands to move around Linux.
-After that, you look up the rest as you go.
-Don't worry about understanding any of it, just type it in and the habit forms pretty quickly.
-
-You start in a dark room. You want to know where you are by **p**rinting out your **w**orking '**d**irectory' (i.e. 'location'):
-
-```bash
-pwd
-```
-
-Have a look at what is here:
-
-```bash
-ls
-```
-
-If you get no response, the list of items is "", meaning "nothing here".
-
-Have a look at **a**ll the files:
-
-```bash
-ls -a
-```
-
-```bash
-. ..
-```
-
-So `.` means 'here' and `..` means 'you see stairs leading downwards' (e.g. 'the directory behind you').
-
-Change directory (`cd`) down one level:
-
-```bash
-cd ..
-```
-
-Look where you are again with `pwd`, then go back up.  Use `ls`, and if you see `bob`, then:
-
-```bash
-cd bob
-```
-
-Move around the directories.  The place at the bottom is the 'root', and is known as `/`.  Go to the root:
-
-```bash
-cd /
-```
-
-Do `ls` again and `cd` into `etc`.  Look at how much space those folders are taking up:
-
-```bash
-du iptables
-```
-That's the number of kilobytes the file is taking up.
-Do the same again, but in a human-readable format:
-
-```bash
-du -h iptables
-```
-
-The `du` program has `-h` for 'human', '-s' for 'short', and a bunch of other commands.
-Have a look at the manual and try another command:
-
-```bash
-man du
-```
-
-Once you're done, press 'q' to quit the manual page and try the extra `du` flag you've found.
-
-Now you can try to gain super-powers and take over the system:
-
-```bash
-sudo -i
-```
-
-At this point, you are 'root'.
-All your commands will be executed, even if they're unsafe, or even if you ask to delete the entire machine.
-Best to exit out of the root account:
-
-```bash
-exit
-```
-
-Go find a file that isn't a directory.  You can tell which is which with:
-
-```bash
-ls -l
-```
-
-A directory starts with a 'd', like this:
-
-```bash
-drwxr-xr-x 79 root root 4096 Jan  3 05:15 /etc/
-```
-
-A standard file starts with '-', like this:
-
-```bash
-`-rw-r--r-- 1 root root 8 Dec 11 17:26 hostname`
-```
-
-Look inside the file /etc/hostname to find out your computer's name:
-
-```bash
-cat /etc/hostname
-```
-
-Print out the words "hello world":
-
-```bash
-echo "hello world"
-```
-
-Move back to your home directory:
-
-```bash
-cd
-```
-
-Take the words 'hello world', and put them in 'my_file':
-
-```bash
-echo 'hello world' > my_file
-```
-
-Measure the disk usage of that file, then put the results at the bottom of the file:
-
-```bash
-du $FILE >> $FILE
-```
-
-And check the results:
-
-```bash
-cat $FILE
-```
-
-# Autocompletion
-
-Press tab after typing a few keys and bash will guess what you're trying to  type.
-
-# Permissions
-
-Look at your file's owner:
-
-```bash
-ls -l $FILE
-```
-
-If it says `-rw-r--r-- 1 root root 8 Dec 11 17:26 hostname` then the file is owned by 'root'.
-
-Take your file and change the owner to root:
-
-```bash
-sudo chown root $FILE
-```
-
-Change the same file so it's owned by the group 'audio':
-
-```bash
-sudo chown :audio $FILE
-```
-
-Check you did that correctly:
-
-```bash
-ls -l my_file
-```
-
-> -rw-r--r-- 1 root audio 0 Jan  3 19:20 my_file
-
-Read the start of that line.  Root can 'read' and 'write' to or delete the file.  Try to remove (delete) it:
-
-```bash
-rm $FILE
-```
-
-You'll see you're not allowed, because you don't own it.
-
-Look at which groups you're in:
-
-```bash
-groups
-```
-
-Change the file so that members of the audio group can write to the file:
-
-```bash
-sudo chmod g+w $FILE
-```
-
-Check you got it right with `ls -l`:
-
-```bash
--rw-rw-r-- 1 root audio 0 Jan  3 19:20 my_file
-```
-
-Try to delete the file again:
-
-```bash
-rm my_file
-```
-
-If you can't, you're not in the audio group.  Add yourself.  You'll need to *modify* your *user account*, by **a**ppending 'audio' to your list of groups.
-Use `-a` to **a**ppend, and `-G`, to say you're modifying groups:
-
-```bash
-sudo usermod -a -G audio [ your username here ]
-```
-
-Now you should be able to remove (delete) the file.  Remember, that using 'rm file' will not send it to a recycling bin. The file is gone.
-
-# Directories
-
-Make a directory called 'new test':
-
-```bash
-mkdir 'new test'
-```
-
-Make two directories, called 'A', and 'Z':
-
-```bash
-mkdir A Z
-```
-
-Make a single directory called 'A Z'
-
-```bash
-mkdir 'A Z'
-```
-
-# Text Searches
-
-Measure the disk usage of everything ('\*' means 'everything'), and put it in a file called 'disk usage.txt':
-
-```bash
-du -sch * > A/'disk usage'.txt
-```
-
-Look at your file:
-
-```bash
-cat A/'disk usage.txt'
-```
-
-If you think you have too much information, use `grep` to just get the one line of text you want:
-
-```bash
-grep total A/disk\ usage.txt
-```
-
-The `grep` program also has a manual ('man page').  You should find out what that `-c` flag does, but the manual is too long to read.
-
-Start the manual:
-
-```bash
-man du
-```
-
-Then search for `-c` by pressing `/`.  Your final keys should be `man du`, then `/-c`
-
-Find out if the `ls` program also has a 'human readable' format by using `grep` to search for the word 'human':
-
-```bash
-man ls | grep human
-```
-
-Now use that flag that you've found in combinatin with the `-l` flag to look at a file.
-
-Remove the directory 'Z':
-
-```bash
-rmdir Z
-```
-
-Remove the directory 'Z':
-
-```bash
-rmdir Z
-```
-
-And then remove all the rest:
-
-```bash
-rmdir *
-```
-
-The 'A' directory will not budge because it's not empty.  Remove it recursively, so the computer will remove the things inside the directory as well as the directory itself:
-
-```bash
-rm -r A
-```
-
-# Installation
-
-You get a package manager which installs programs, fonts, et c.
-If you're on something like Debian, you'll have `apt`, or if you're on something like Red Hat, you'll have `yum`.
-If unsure, ask where a program is:
-
-```bash
-whereis yum
-```
-
-```bash
-whereis apt
-```
-
-If you get a hit, you can use whatever program that is to install things.
-
-Set a reminder of your package manager:
-
-```bash
-echo my package manager is yum | lolcat
-```
-
-If that failed it's because you don't have `lolcat` installed.
-Install lolcat:
-
-```bash
-sudo apt install lolcat
-```
-
-Try the same command again.
-
-Search for things you want, like `libreoffice`, or `gimp`:
-
-```bash
-apt search libreoffice
-```
-
-... then install one of them with:
-
-```bash
-apt install $PROGRAM
-```
-
-Remove `lolcat`, because it's useless:
-
-```sh
-sudo apt remove lolcat
-```
-
-...and that's pretty much it.
-You can move, create, destroy, install things, and look things up.
-
-# Review
-
-- Search for random things with your package manager and install the interesting ones.
-  * Read the manual with `man thing`
-  * If it's useless, remember to uninstall it.
-- Have a look around the file system in `/`.
-- Look in the `.config` folder in your home directory.
-  * If you copy a program's config to another machine, the program will behave just like you set it up in your own machine.
-

basics/column.md

@@ -1,36 +0,0 @@
----
-title: "column"
-tags: [ "basics", "format", "json" ]
----
-
-Put output into column.
-
-```bash
-du -h /etc/* | column
-```
-
-Reformat file with an explicit separator (`-s`):
-
-```bash
-column -ts: /etc/passwd
-```
-
-Give columns names (`-N`), so you can hide some (`-H`):
-
-```bash
-column -ts: -N User,PW,UID,GID,Description,Home,shell -H PW,GID /etc/passwd
-```
-
-Reorder with `-O` (unspecified items remain):
-
-
-```bash
-column -ts: -N User,PW,UID,GID,Description,Home,shell -H PW,GID -O User,Description,shell /etc/passwd 
-```
-
-Output to json format with `-J`:
-
-```bash
-column -J -ts: -H PW,GID,shell -N User,PW,UID,GID,Description,Home,shell /etc/passwd
-```
-

basics/cron.md

@@ -1,129 +0,0 @@
----
-title: "cron"
-tags: [ "basics", "time" ]
----
-# Cronie
-
-The `cronie` program is also known as `crond`.
-
-## Install
-
-```bash
-sudo apt search -n ^cron
-```
-
-Once installed, search for the service name, and start it.
-
-```bash
-sudo systemctl list-unit-files | grep cron
-sudo systemctl enable --now $NAME
-```
-
-## Usage
-
-Show your current crontab:
-
-```bash
-crontab -l
-```
-
-You can put this in a file and edit it:
-
-```bash
-crontab -l > $filename
-echo '39 3 */3 * * /bin/tar czf /tmp/etc_backup.tgz /etc/' >> $filename
-```
-
-Then apply that crontab:
-
-```bash
-crontab $filename
-rm $filename
-```
-
-The `cron` program will check your syntax before adding the tab.
-
-Your crontab file sits somewhere in `/var/spool/`.
-Probably in `/var/spool/cron`.
-
-## Syntax
-
-`* * * * *`
-
-These five points refer to:
-
-`minute hour day month weekday`
-
-So '3pm every Sunday' would be:
-
-`0 15 * * 7`
-
-Here 'Sunday' is indicated by "7", and '3pm' is 'the 15th hour'.
-The minute is '0' (i.e. '0 minutes past three pm').
-
-Doing the same thing, but only in February, would be:
-
-`0 15 * 2 7`
-
-### Variables
-
-`cronie` doesn't know where you live, so to put something in your `$HOME` directory, you have to tell it:
-
-
-```bash
-echo "HOME=$HOME" > $filename
-crontab -l >> $filename
-crontab $filename
-```
-
-`cronie` doesn't know where anything lives, including programs.
-You can give it your usual `$PATH` variable like this:
-
-
-```bash
-echo $PATH > $filename
-crontab -l >> $filename
-crontab $filename
-```
-
-Now instead of doing this
-
-`40 */3 * * * /usr/bin/du -sh $HOME/* | sort -h > $HOME/sum.txt`
-
-You can simply do this: 
-
-`40 */3 * * * du -sh $HOME/* | sort -h > $HOME/sum.txt`
-
-## Run as Root
-
-You can execute a script as root by putting it into a directory, instead of in the tab.
-Look at the available cron directories:
-
-```bash
-ls -d /etc/cron.*
-```
-
-Make a script which runs daily:
-
-```bash
-f=apt_update.sh
-echo '#!/bin/bash' > $f
-echo 'apt update --yes' >> $f
-chmod +x $f
-sudo mv $f /etc/cron.daily/
-```
-
-### Testing with runparts
-
-Run-parts runs all executable scripts in a directory.
-
-```bash
-run-parts /etc/cron.hourly
-```
-
-# Troubleshooting
-
-### `date` Commands
-
-Cron doesn't understand the `%` sign, so if you want to use `date +%R`, then it should be escaped with a backslash: `date +\%R`.
-

basics/setup/Quality_of_Life.md

@@ -1,180 +0,0 @@
----
-title: "Quality of Life"
-tags: [ "basics", "setup" ]
-dependencies: [ "vi", "basics" ]
----
-
-This & That
-===========
-
-Refer to 'that last thing', and 'the first thing':
-
-```bash
-fortune -l > file1
-cat !$  | tr -d u
-diff !^ !$
-```
-
-**NB:** this can go wrong:
-
-```bash
-ls -l file1 file2
-cat !^
-```
-
-Done
-----
-
-`<C-d>`
-
-- If you have a command, Control + d will execute the command.
-- If you have nothing, `exit`.
-
-Input Run-Commands (`~/.inputrc`)
-=================================
-
-Alias Expansion
----------------
-
-```bash
-echo '"\C- ": shell-expand-line' >> ~/.inputrc
-exec bash
-```
-
-Now you can expand all aliases with 'Control + Space'.
-Try just `ls`, then 'Control + Space'.
-
-Glob Expansion (`*`)
---------------------
-
-```bash
-echo '"\C-x": glob-expand-word' >> ~/.inputrc
-exec bash
-ls *<C-x>
-```
-
-- Are you sure you want to delete that?
-    * `rm -r *<C-x>`
-- Clean up the Downloads folder:
-    * `rm Downloads/*pdf<C-x>`
-
-Arbitrary Commands
-------------------
-
-Use `\n` as a 'newline' character to automatically press `<Return>`.
-
-```bash
-echo 'Control-y: "| lolcat\n"' >> ~/.inputrc
-exec bash
-ls<C-y>
-```
-
-```bash
-Control-l: "\C-u clear -x && ls\n"
-exec bash
-cd /etc/<C-l>
-```
-
-Readline as Vi
---------------
-
-```bash
-echo 'set editing-mode vi' >> ~/.inputrc
-echo 'set keymap vi-insert' >> ~/.inputrc
-exec bash
-```
-
-The prompt now works according to `vi`-motions.
-This goes much further than the bash-option, `set -o vi` ('set option: `vi`').
-It changes the cursor in the terminal, not just bash.
-
-Try:
-
-- `ls <C-n>`
-- `ls <C-p>`
-- Type some words.
-- `<Esc>0dw$p`
-- <Esc> to normal-mode, and go back with 'b', and forward with 'e'.
-- `4b` to step back four times.
-- `cE`
-- `<Esc>kcw`
-- ls -a<Esc>xxxx
-
-Works with `python` too:
-
-```python
-im<C-n>os<Return>
-os.li<C-n><Return>
-<Esc>kfn
-<C-d>
-```
-
-Fix Globs!
-----------
-
-If you tried the previous commands then they will not work any more, because the `vi`-commands overwrite the other commands.
-Remove them.
-
-```bash
-sed '/ vi/d' ~/.inputrc
-sed -i '/ vi/d' ~/.inputrc
-
-sed '1 i set editing-mode vi' .inputrc 
-sed -i '1 i set editing-mode vi' ~/.inputrc 
-sed -i '2 i set keymap vi-insert' ~/.inputrc 
-```
-
-Vi-sibility
------------
-
-The `readline` prompt becomes confusing if you don't remember if you're in insert or normal mode.
-But you can show the  current mode in the prompt:
-
-```bash
-echo 'set show-mode-in-prompt on' >> ~/.inputrc
-exec bash
-```
-
-Set new symbols for normal and insert mode:
-
-```bash
-echo 'set vi-ins-mode-string "  "' >> ~/.inputrc
-echo 'set vi-cmd-mode-string " "' >> ~/.inputrc
-```
-
-Fuzzy Sort
-==========
-
-Check your repos for `sk-im`, and install.
-The program is called `sk`.
-
-```bash
-FUZZY=sk
-```
-
-If you don't have it, `fzy` or `fzf` should work the same way.
-
-```bash
-FUZZY=fzy
-```
-
-Find some 'read-config' files to check out:
-
-```bash
-find . -maxdepth 2 -name "*rc"
-find . -maxdepth 2 -name "*rc" | $FUZZY
-```
-
-And read some:
-
-```bash
-PAGER='less -R'
-$PAGER "$(find . -maxdepth 2 -name "*rc" | $FUZZY)"
-```
-
-Make the change long-term:
-
-```bash
-alias rrc='$PAGER "$(find . -maxdepth 2 -name "*rc" | sk)"'
-alias | grep rrc= >> ~/.bash_aliases
-```

basics/time.md

@@ -1,78 +0,0 @@
----
-title: "time"
-tags: [ "basics", "time" ]
----
-# systemd
-
-Set time to synchronize with an ntp server:
-
-```bash
-timedatectl set-ntp true
-```
-
-This info stays in `/usr/share/zoneinfo`.
-
-# Local Time
-
-Local time is kept in /etc/localtime.
-
-According to Dave's LPIC guide, you can set the local time by making asymboling link from your timezone to /etc/localtime, as so:
-
-```bash
-sudo ln -sf /usr/share/zoneinfo/Europe/Belgrade /etc/localtime
-```
-
-...however this produced the wrong time for me.  Further, /etc/localtime produces an output with cat, while the zoneinfo files do not.
-
-# Locale
-
-See local time, language and character settings with:
-
-```bash
-locale
-```
-
-List available locales with:
-
-```bash
-locale -a
-```
-
-To see additional locales which are available (but not necessarily installed):
-
-```bash
-cat /usr/share/i18n/SUPPORTED
-```
-
-Set a supported locale with:
-
-```bash
-locale-gen pl_PL.UTF-8
-```
-
-Then set that language, with:
-
-```bash
-LANG=pl_PL.UTF-8
-```
-
-...then reboot.
-
-# Network Time Protocol
-
-Glimpse an overview with:
-
-```bash
-ntpq -p
-```
-
-Usually this is run as a service, so just start that service.
-
-# Force Reset
-
-If your clock drifts too far from the right time, it will not reset happily.
-For it to reset like this:
-
-```bash
-sudo ntpd -q -g -x -n
-```

chat/profanity.md

@@ -1,13 +1,16 @@
 ---
-title: "profanity"
-tags: [ "chat", "omemo" ]
+title: profanity
+tags: 
+- chat
+- omemo
 ---
+
 # Setup (Commands)
 
 Sign up to an account somewhere.
 
 ```
-/connect bob@bobserver.org
+/connect ${name}@${host}
 ```
 
 Check if someone wants to be your friend:
@@ -19,13 +22,13 @@ Check if someone wants to be your friend:
 Accept a friend's subscription request:
 
 ```
-/sub add alice@aliceserver.org
+/sub add ${name}@${host}
 ```
 
 Join a room:
 
 ```
-/join room1@bobserver.org
+/join ${room}@${host}
 ```
 
 Save your configuration so you don't have to do this again:
@@ -38,14 +41,14 @@ Check your `~/.config/profanity/profrc` for how to data's saved.
 
 ## Automatically Sign In
 
-To automatically sign in, add your password to [pass](../data/pass.md).
+To automatically sign in, add your password to [pass](data/pass.md).
 
 ```
-/account set *malin@oosm.org* eval_password pass *xmpp*
+/account set ${name}@${host} eval_password pass *xmpp*
 ```
 
 ```
-/autoconnect set *malin@oosm.org*
+/autoconnect set ${name}@${host}}
 ```
 
 ```
@@ -59,7 +62,7 @@ Remember to save the config for other commands too.
 ## Messages
 
 ```
-/msg alice@aliceserver.org
+/msg ${name}@${host}}
 ```
 
 This opens in a new tab.
@@ -96,7 +99,7 @@ Tell it how to save files:
 Then get the file with:
 
 ```
-/urlsave *<Tab>*
+/urlsave <Tab>
 ```
 
 Same for `/urlopen`
@@ -140,5 +143,3 @@ You can ensure omemo automatcally turns on:
 ```
 /omemo policy automatic
 ```
----
-

chat/profanity_automation.md

@@ -0,0 +1,15 @@
+---
+title: profanity automation
+tags: 
+- chat
+- omemo
+requires: 
+- chat/profanity.md
+---
+
+Automate profanity with `--cmd`.
+
+
+```sh
+profanity --cmd /foo --cmd "/sleep 10" --cmd /quit
+```

chat/send_email.md

@@ -0,0 +1,76 @@
+---
+title: Send an email with a CLI command
+tags: 
+- email
+requires:
+- data/pass.md
+---
+
+# Setup the Config
+
+Install `msmtp` and set up the defaults.
+
+```sh
+mkdir ~/.config/msmtp/
+cat > ~/.config/msmtp/config << EOF
+defaults
+tls on
+auth on
+
+EOF
+```
+
+You'll need to fill in some variables, like your provider's hostname and SMTP port.
+The `${pass_name}` is just the `pass` command which gives your email password.
+
+```sh
+name=posteo
+host=posteo.de
+port=587
+user=bob@posteo.net
+pass_name=posteo.net
+```
+
+With those in, add that default account.
+
+
+```sh
+cat >> ~/.config/msmtp/config << EOF
+
+account ${name}
+host ${host}
+port ${port}
+user ${user}
+from ${user}
+passwordeval pass ${pass_name}
+
+```
+
+Finally, set this as the default account:
+
+
+```sh
+account default : ${account} >> ~/.config/msmtp/config
+```
+
+# Write an Email
+
+Fill out the headers in a file called `mail`.
+
+```
+From: MSMTP ${user}
+Subject: Pipes
+To: ${recipient_name} <${recipient_email}>
+
+A pipe gives a wise man time to think and a fool something to stick in his
+mouth.
+```
+
+# Send
+
+Send the email:
+
+```sh
+msmtp -t bindrpg@posteo.uk < mail
+```
+

chat/wgetpaste.md

@@ -1,6 +1,7 @@
 ---
-title: "wgetpaste"
-tags: [ "chat" ]
+title: wgetpaste
+tags: 
+- chat
 ---
 
 See available pastebins:
@@ -27,3 +28,9 @@ Paste in the file then load the result to the right-hand clipboard:
 wgetpaste -s dpaste -X
 ```
 
+---
+title: 
+tags: 
+chat
+---
+

cmd.mk

@@ -0,0 +1,36 @@
+
+cmds != recsel command.rec -t command -G bin -CP bin | sort -u
+lists = $(patsubst %,lists/%.md, $(cmds))
+
+get_title = printf 'title: %s\n' '${1}'
+get_tags = recsel -t $(basename $<) $< -G bin \
+	-e 'bin = "$(1)"' -U -CP tag,bin | \
+	sed 's/.*/- &/'
+
+list_commands = recsel -t $(basename $<) $< -e 'bin = "$(1)"' | \
+	recfmt -f lists.fmt
+
+$(lists): lists/%.md: command.rec | lists/
+	@printf '%s\n' '---' > $@
+	@$(call get_title,$(basename $(notdir $@))) >> $@
+	@printf '%s\n' 'tags: ' >> $@
+	@$(call get_tags,$(basename $(notdir $@))) >> $@
+	@printf '%s\n' '---' >> $@
+	@$(call list_commands,$(basename $(notdir $@))) >> $@
+
+.PHONY: function
+function: ## Output a search function for .bashrc
+	${MAKE} --silent --touch query
+	printf '%s\n' 'lk(){'
+	${MAKE} --silent --dry-run query | sed 's/^/\t/'
+	printf '%s\n' '}'
+
+.PHONY: query
+query: db.rec ## Search the setup notes
+	passes=0 count=0; until [ "$$count" -eq "1" ] || [ "$$passes" -gt 2 ] ; do \
+		query="$$(recsel "${PWD}"/db.rec -p aim,tag | recsel -iq "$$query" -CP aim,tag | sort -u | fzf --preview='recsel "${PWD}"/db.rec -e "aim~{}"')" \
+		&& count="$$(recsel "${PWD}"/db.rec -q "$$query" -c )" ;\
+		passes=$$(( passes + 1 )) ;\
+	done \
+	&& recsel "${PWD}"/db.rec -q "$$query" | recfmt -f "${PWD}/lists.fmt" | ${PAGER}
+

command.rec

@@ -0,0 +1,504 @@
+%rec: command
+%doc: shell command examples
+%type: aim line
+%allowed: aim cmd bin tag note shell
+%unique: shell
+
+aim: Put output into columns
+cmd: ip a | grep inet | column  -ts' '
+shell: sh
+bin: column
+tag: format
+
+aim: Reformat user accounts with an explicit separator (`-s`)
+cmd: column -ts: /etc/passwd
+shell: sh
+bin: column
+tag: format
+
+aim: Sort user accounts into columns with names
+cmd: column -ts: -N User,PW,UID,GID,Description,Home,shell -H PW,GID /etc/passwd
+note: Hide some columns with `-H`.
+shell: sh
+bin: column
+tag: format
+
+aim: Sort user accounts into columns and reorder them
+cmd: column -ts: -N User,PW,UID,GID,Description,Home,shell -H PW,GID -O User,Description,shell /etc/passwd 
+note: Unspecified items remain.
+shell: sh
+bin: column
+tag: format
+
+aim: Output user accounts in json format with `-J`
+cmd: column -J -ts: -H PW,GID,shell -N User,PW,UID,GID,Description,Home,shell /etc/passwd
+shell: sh
+bin: column
+tag: format
+tag: json
+
+aim: Make a QR Code image
+cmd: qrencode 'https://play.google.com/store/apps/details?id=org.briarproject.briar.android' -o "${file}".png
+shell: sh
+bin: qrencode
+tag: qr
+
+aim: Make a QR Coded message in the terminal
+cmd: qrencode -t ansi "Hello World"
+shell: sh
+bin: qrencode
+tag: qr
+
+aim: Read a QR Code image
+cmd: zbarimg ${file}
+shell: sh
+bin: qrencode
+tag: qr
+
+aim: Show wifi QR code (only with Network Manager)
+cmd: nmcli device wifi show-password
+shell: sh
+bin: qrencode
+bin: nmcli
+tag: qr
+tag: wifi
+
+aim: Combine many recfiles of different types into one
+cmd: sed '1i\ ' *.rec > all.rec
+shell: sh
+bin: sed
+tag: recfiles
+tag: database
+
+aim: Combine many recfiles of the same type into one
+cmd: recinf -d -t ${type} ${one}.rec > ${all}.rec
++ sed '/^%/d' ${one}.rec ${two}.rec > all.rec
+note: The strange syntax used by `sed` only makes sense after using [ed](writing/ed.md)
+shell: sh
+bin: sed
+bin: recinf
+tag: recfiles
+tag: database
+
+aim: Roll a die
+cmd: echo $(( RANDOM % 6+1 ))
+shell: bash
+tag: random
+
+aim: Remotely edit a file with vim
+cmd: vim scp://${server}/~/${file}
+cmd: vim scp://${user}@${server}:${port}//${path}/${file}
+shell: sh
+bin: vim
+bin: scp
+tag: network
+
+aim: Find and replace across all files open in vim
+cmd: :bufdo! %s/${pattern}/${replacement}/g
+shell: sh
+bin: vim
+tag: writing
+tag: replace
+
+aim: Find and replace words, but confirm each replacement
+cmd: vim -c "%s/${pattern}/${replacement}/gc" -c 'wq' ${file}
+shell: sh
+bin: vim
+tag: replace
+tag: substitution
+tag: TUI
+tag: writing
+
+aim: Hard reset ntp service
+cmd: sudo ntpd -q -g -x -n
+bin: ntpd
+tag: time
+tag: system
+
+aim: Check a service
+cmd: sudo systemctl status mpd
+shell: sh
+bin: systemd
+tag: system
+tag: service
+
+aim: Recognize service changes
+cmd: sudo systemctl daemon-reload
+shell: sh
+bin: systemd
+tag: system
+tag: service
+
+aim: Start a service (it stops when the computer shuts down)
+cmd: sudo systemctl taskd.service start
++ sudo systemctl daemon-reload
+shell: sh
+bin: systemd
+tag: system
+tag: service
+
+aim: Find out why the computer takes so long to start
+cmd: sudo systemd-analyze
++ sudo systemd-analyze blame
+shell: sh
+bin: systemd
+tag: system
+tag: boot
+
+aim: See what the computer is doing
+cmd: journalctl -f
+shell: sh
+bin: journalctl
+tag: system
+
+aim: Check your own user services:
+cmd: journalctl -f
+shell: sh
+bin: journalctl
+tag: system
+
+aim: Edit users in /etc/passwd directly
+cmd: sudo vipw
+note: You can't edit passwords with black magic.
+shell: sh
+bin: vipw
+bin: sudo
+tag: system
+tag: users
+
+aim: Edit groups in /etc/group directly
+cmd: sudo vigr
+note: You can't edit passwords with black magic.
+shell: sh
+bin: vipw
+bin: sudo
+tag: system
+tag: groups
+
+aim: Follow the `ssh` daemon service
+cmd: journalctl -f -u sshd
+shell: sh
+bin: journalctl
+tag: system
+
+aim: Get back terminal after ssh freezes remote machine
+cmd: <Return>~.
+shell: sh
+bin: ssh
+tag: system
+tag: comfy
+
+aim: Find errors since a date
+cmd: date=2027-01-01
++ journalctl --since=${date} --grep="EXT4-fs error"
+shell: sh
+bin: journalctl
+tag: system
+
+aim: Limit the systemd's journal size to 2 gigabytes
+cmd: journalctl --vacuum-size=2G
++ journalctl --disk-usage
+shell: sh
+bin: journalctl
+tag: system
+tag: logs
+
+aim: Log the fact that you've installed your own `dnsmasq` on your system to `journalctl`, so that you can determine why your system's broken later
+cmd: logger "Installed new dnsmasq"
++ sudo journalctl -f
+shell: sh
+bin: journalctl
+bin: logger
+tag: system
+tag: logs
+
+aim: Convert markdown table to csv
+cmd: mlr --imarkdown --ocsv cat ${file}.md
+bin: mlr
+tag: csv
+tag: markdown
+tag: data
+
+aim: Convert a csv file to markdown
+cmd: mlr --icsv --omd cat ${file}.csv
+bin: mlr
+tag: csv
+tag: markdown
+
+aim: Quickly find and open run-command files
+cmd: alias rrc='$PAGER "$(find . -maxdepth 2 -name "*rc" | fzf)"'
+bin: fzf
+bin: find
+tag: comfy
+
+aim: Quickly hunt and kill processes
+cmd: kill $(pgrep less | fzf -m --preview='ps {}')
+note: Select many with shift/tab.
+bin: fzf
+tag: comfy
+
+aim: Search for a short word
+cmd: grep "\b${word}\b" ${file}
+bin: grep
+tag: search
+
+aim: Extract words in quotes
+cmd: grep -o "\b${word}\b" ${file}
+bin: grep
+tag: search
+
+aim: Reformat text for shell input
+cmd: printf "%q\n" "${text}"
+bin: printf
+tag: xargs
+tag: stdout
+
+aim: Find your public IP address
+cmd: dig +short myip.opendns.com @resolver$((RANDOM % 4 + 1)).opendns.com
+shell: bash
+bin: dig
+tag: ip
+tag: network
+
+aim: Turn markdown into a man page
+cmd: man <(lowdown -stman ${file}.md)
+cmd: top_title="Bugs in netcat"
++ someplace=LK
++ vol=Security
++ sec=6
++ lowdown -m manheader="${top_title}" -m source="${someplace}" -m volume="${vol}" -m section=${sec} -stman ${file}.md > ${file}.${sec}
++ man ./${file}.${sec}
+shell: bash
+bin: lowdown
+bin: groff
+bin: man
+tag: markdown
+
+aim: Convert jpg to png
+cmd: magick ${input}.jpg ${output}.png
+bin: magick
+tag: vision
+
+aim: Reduce jpg size by reducing quality
+cmd: quality=70
++ magick ${input}.jpg -quality ${quality} ${output}.jpg
+cmd: size=50
++ magick -resize ${size}% ${input}.jpg ${output}.jpg
+bin: magick
+tag: vision
+
+aim: Reduce png size
+cmd: magick ${input}.png png8:${output}.png
+bin: magick
+tag: vision
+
+aim: Invert jpg colours
+cmd: magick ${input}.jpg ${output}.jpg -negate
+bin: magick
+tag: vision
+
+aim: Make jpg smaller
+cmd: magick ${input}.jpg -resize 25% ${output}.jpg
+bin: magick
+tag: vision
+
+aim: Trim images to border
+cmd: magick -trim ${image}.png ${output}.png
+bin: magick
+tag: vision
+
+aim: Make the white of an image transparent
+cmd: magick -transparent white -fuzz 10% ${input}.png ${output}.png
+bin: magick
+tag: vision
+note: The 'fuzz' option tells the computer that 'close to white' is fine.  You might want to use 20% or higher fuzz.
+
+aim: Give transparrent image a dropshadow
+cmd: magick ${input}.png \( +clone -background black -shadow 50x8+0+5 \) +swap -background none -layers merge +repage ${output}.png
+bin: magick
+tag: vision
+
+aim: Convert every jpg in directory to png
+cmd: mogrify -format png *.jpg
+bin: magick
+tag: vision
+
+aim: Convert from jpg to svg
+cmd: magick -flatten ${input}.jpg ${output}.ppm
++ potrace -s ${output}.ppm -o ${svgout}.svg
+bin: magick
+tag: vision
+
+aim: Make an image showing day of the week
+cmd: magick -list font
++ font="$(magick -list font | grep -oP 'Font: \K.*' | head -1)"
++ 
++ magick -fill blue -font "${font}" -gravity center -pointsize 79 label:$(date +%A) day.png
+bin: magick
+tag: vision
+
+aim: Make a meme
+cmd: magick ${input} -font impact -fill white -pointsize 84 -stroke black -strokewidth 3 -gravity north -annotate +0+20 'TOP MEME TEXT' -gravity south -annotate +0+20 'BOTTOM MEME TEXT' ${output}
+bin: magick
+tag: vision
+tag: memes
+
+aim: Rotate a video
+cmd: ffmpeg -i "${input}" -vf "transpose=1" "${out.mov}"
+note: 
++ | No. | Degrees | Flip                                   |
++ |:---:|:-------:|:---------------------------------------|
++ | 0   | 90 Counterclockwise and verfical flip (default)  |
++ | 1   | 90 Clockwise                                     |
++ | 2   | 90 CounterClockwise                              |
++ | 3   | 90Clockwise and vertical flip                    |
+tag: vision
+tag: video
+shell: sh
+
+aim: Translate a media file to a new type
+cmd: ffmpeg -formats
++ ffmpeg -i ${input} ${output}
+bin: ffmpeg
+tag: vision
+tag: music
+tag: video
+shell: sh
+
+aim: Reduce video quality
+cmd: quality=20
++ ffmpeg -i ${input}.mp4 -vcodec libx264 -crf ${quality} ${output}.mp4
+note: A crf quality of 18 is high, while 24 is low quality.
+bin: ffmpeg
+tag: vision
+tag: video
+shell: sh
+
+aim: Convert from mkv to mp4 with a codec
+cmd: ffmpeg -i ${input}.mkv -codec copy ${output}.mp4
+note: Both mp4 and mkv are wrappers around other formats, so this conversion loses less quality than other conversion types.
+bin: ffmpeg
+tag: vision
+tag: video
+shell: sh
+
+aim: Convert video to audio
+cmd: ffmpeg -i ${input}.mp4 -vn ${output}.mp3
+bin: ffmpeg
+tag: vision
+tag: video
+shell: sh
+
+aim: Convert all mkv files to mp4
+cmd: for i in *.mkv; do
++ ffmpeg -i "$i" -codec copy "${i%.*}.mp4"
++ done
+bin: ffmpeg
+tag: vision
+shell: sh
+
+aim: Change resolution
+cmd: ffmpeg -i ${input}.mp4 -filter:v scale=1280:720 -c:a copy ${output}.mp4
+bin: ffmpeg
+tag: vision
+shell: sh
+
+aim: Change video aspect ratio
+cmd: ffmpeg -i input.mp4 -aspect 16:9 output.mp4
+bin: ffmpeg
+tag: vision
+tag: video
+shell: sh
+
+aim: Trim video to start and stop times
+cmd: start=00:00:50
++ stop=50
++ ffmpeg -i ${input}.mp4 -ss ${start} -codec copy -t ${stop} ${output}.mp4
+note: The `$stop` time shows how many seconds after the start you want.
+bin: ffmpeg
+tag: vision
+shell: sh
+
+aim: Compress a video file
+cmd: quality=21
++ ffmpeg -i ${input}.mp4 -vf scale=1280:-1 -c:v libx264 -preset veryslow -crf ${quality} ${output}.mp4
+note: A crf quality of 18 is high, while 24 is low quality.
+bin: ffmpeg
+tag: vision
+tag: video
+shell: sh
+
+aim: Convert video to a series of images
+cmd: framerate=1
++ format=image2
++ ffmpeg -i input.mp4 -r ${framerate} -f ${format} image-%2d.png
+bin: ffmpeg
+tag: vision
+shell: sh
+
+aim: Add subtitles to a video file
+cmd: fmpeg -i ${input}.mp4 -i subtitle.srt -map 0 -map 1 -c copy -c:v libx264 -crf 23 -preset veryfast ${output}.mp4
+bin: ffmpeg
+tag: vision
+shell: sh
+
+aim: Convert a web page to markdown
+cmd: curl -sL "${url}" | html2markdown > "${file}}".md
+cmd: curl -sL "${url}" | html2text > "${file}}".md
+note: The `[html2markdown](https://github.com/JohannesKaufmann/html-to-markdown)` and `html2md` programs works better than any other.
+bin: html2markdown
+bin: curl
+tag: writing
+tag: web
+shell: sh
+
+aim: Decode a URL with function
+cmd: urldecode() { echo -e "${@//%/\\x}"; }
++ urldecode "${magnet}"
+tag: web
+shell: bash
+
+aim: Choose which parts to commit with git
+cmd: git commit -p
+note: Use `P` to see big changes which cannot fit on the screen.
+tag: comfy
+bin: git
+shell: sh
+
+aim: Request a definition from the terminal.
+cmd: word='abderian'
++ curl -s dict://dict.org/define:${word}:
+cmd: function wotsa(){
++ 	def="$(curl -s dict://dict.org/define:${1// /+}: | grep -vP '^\d\d\d ')"
++ 	if [ "$def" = "" ]; then
++ 		echo no definition
++ 	else
++ 		echo "$def" | $PAGER
++ 	fi
++ }
+bin: curl
+tag: writing
+tag: comfy
+tag: dict
+shell: sh
+
+aim: Email a pull request which points to your git server
+tag: git
+bin: git
+tag: email
+tag: pr
+cmd: repo=ssh://soft.dmz.rs:2222/mkdots/
++ theirHead='HEAD^^^^'
++ head=master
++ git request-pull "${theirHead}" "${repo}" "${head}"
+note: You can note where your branch diverged from theirs with a commit hash,
++ or a relative position, like `HEAD^^` (e.g. 'two commits before your latest').
+
+aim: Clean up a bloated git repo
+cmd: git fsck --full
++ git gc --prune=now --aggressive
++ git repack
+bin: git
+tag: maintenance
+shell: sh
+

data/archives.md

@@ -1,15 +1,16 @@
 ---
-title: "Archives"
-tags: [ "tar", "backups", ".tgz", "tar.gz" ]
+title: Archives
+tags: 
+- archives
+- backups
 ---
-# `tar`
 
-## Create
+# Create
 
 Combine many files and directories into a single t-archive file.
 
 ```sh
-tar cf "$ARCHIVE".tar $DIR
+tar cf "${archive}".tar ${dir}
 ```
 You can remember this with the mnemonic '*C*reate *F*ile'.
 
@@ -17,13 +18,13 @@ Unfortunately, this stores the full file path, so making a tar archive of `/etc/
 It's often better to tell tar which path to start from using the `-C` flag.
 
 ```sh
-tar cf "$ARCHIVE".tar -C /etc/ nginx
+tar cf "${archive}".tar -C /etc/ nginx
 ```
 
 Check the contents of your archive with:
 
 ```sh
-tar tf "$ARCHIVE".tar
+tar tf "${archive}".tar
 ```
 
 If you want to store 'everything in a directory', then using `*` will not work, because it will target everything in the *current* directory.
@@ -32,47 +33,26 @@ Instead, you can store the target in a variable:
 
 ```sh
 files=$(ls /etc/nginx)
-tar cf "$ARCHIVE".tar -C /etc/nginx/ $file
+tar cf "${archive}".tar -C /etc/nginx/ $file
 ```
 
-## Extract
+# Extract
 
 Extract the tar archive with
 
 ```sh
-tar xf "$ARCHIVE".tar
+tar xf "${archive}".tar
 ```
 
 You can remember this with the mnemonic 'e*X*tract *F*ile'.
 
-## Compress
+# Compress
 
 Create a zip-compressed archive with the `z` flag.
 
 ```sh
-tar czf "$ARCHIVE".tgz -C /etc/nginx/ $file
+tar czf "${archive}".tgz -C /etc/nginx/ $file
 ```
 
 You can use any file ending you want, but sane people like to use '.tgz' or '.tar.tgz'.
 
-# 7zip
-
-(also called 'p7zip' or '7z')
-
-Make archive:
-
-```sh
-7za a -tzip -p "$PASSWORD" -mem=AES256 $ARCHIVE.zip $FILE_1 $FILE_2
-```
-
-Note that people can still see every filename in your archive, and can change those files.
-They just can't read the contents.
-
-Unzip:
-
-```sh
-7za x archive.zip
-```
-
-7zip will open anything: zip-files, rar-files, a tin of beans, *anything*.
-However, the extracted tgz files will just be tar files, so you will still need to use tar to extract them (see above).

data/base_16.md

@@ -1,6 +1,7 @@
 ---
-title: "Base 16"
-tags: [ "data" ]
+title: Base 16
+tags: 
+- data
 ---
 
 Base 16 numbers often use `0x` at the start, so '10' just means '10', but `0x10` means '10 in base 16' which means '16'.

data/calcurse.md

@@ -1,14 +0,0 @@
----
-title: "calcurse"
-tags: [ "data", "calendar", "daylight savings" ]
----
-
-## Setup
-
-The UK government keeps an `ics` file with clock.
-
-```sh
-wget https://www.gov.uk/when-do-the-clocks-change/united-kingdom.ics
-calcurse -i united-kingdom.ics
-```
-

data/calcurse_import.sh

@@ -0,0 +1,34 @@
+---
+title: Import an ICS file into calcurse
+tags: 
+- data
+- calendar
+- daylight savings
+requires:
+- calcurse
+---
+
+## Setup
+
+The UK government keeps an `ics` file with clock.
+
+```sh
+wget https://www.gov.uk/when-do-the-clocks-change/united-kingdom.ics
+calcurse -i united-kingdom.ics
+```
+
+If you already have some of these events, and don't want duplicates, import the events into a temporary file.
+
+
+```sh
+TMP=$(mktemp)
+curl -s "$1" | calcurse -q -i - -c "$TMP"
+```
+
+Then search for new lines in the new calendar file to put into your appointments file.
+
+```sh
+CALDATA=~/.local/share/calcurse/apts
+grep -vf "$CALDATA" "$TMP" >> "$CALDATA"
+rm $TMP
+```

data/email.md

@@ -1,6 +1,8 @@
 ---
-title: "e-mail"
-tags: [ "data", "smtp" ]
+title: e-mail
+tags: 
+- data
+- smtp
 ---
 
 This is bare-bones, original, primitive e-mail.

data/exiftool.md

@@ -1,6 +1,8 @@
 ---
-title: "exiftool"
-tags: [ "metadata", "exifdata" ]
+title: exiftool
+tags: 
+- metadata
+- exifdata
 ---
 
 Find metadata:

data/git.md

@@ -0,0 +1,133 @@
+---
+title: git
+tags: 
+- data
+- setup
+---
+
+
+```sh
+git config --global user.email "${email}"
+```
+
+```sh
+git config --global user.name "${name}"
+```
+
+Decide on algorithm:
+
+- If you're scared of insecure hash-sums, go with `hash=sha256`.
+- If you don't know what a hash sum is, go with `hash=sha1`.
+
+## Init the Git
+
+Start a git in directory `${DIR}`:
+
+```sh
+git init --object-format=${hash} ${DIR}
+cd ${dir}/
+```
+
+Make a file explaining what the project does, and tell `git` to track it:
+
+```sh
+echo "I hereby solemnly swear never to commit a binary file." > README.md
+git add README.md
+```
+
+Then make the initial commit, explaining the change you just made:
+
+```sh
+git commit
+```
+
+# Working
+
+Once you make a change to some file, add it and make a commit explaining it.
+
+```sh
+git add ${file}
+```
+
+```sh
+git commit -m"change ${file}"
+```
+
+Check your history:
+
+```sh
+git log
+```
+
+# Remotes
+
+If you want to keep a copy on a public site such as Gitlab, so others can see it, then go there and create a blank project (no readme, nothing).
+Give it the same name as the `$DIR` directory, above.
+
+Add this as a remote:
+
+```sh
+remote=gitlab
+git remote add ${remote}  https://gitlab.com/${username}/${dir}
+```
+
+Tell git you're pushing the branch 'master' to the remote repo 'origin': 
+
+```sh
+git push -u master origin
+```
+
+Pull down changes that others have made:
+
+```sh
+git pull
+```
+
+# Branches
+
+A branch is a full copy of the project to test additional ideas.
+You can make a new branch called 'featurez' like this:
+
+```sh
+git branch ${feature_branch}
+```
+
+Have a look at all your branches:
+
+```sh
+git branch
+```
+
+Switch to your new branch:
+
+```sh
+git checkout ${feature_branch}
+```
+
+And if your changes are rubbish, checkout the "master" branch again, then delete "featurez":
+
+```sh
+git branch -D ${feature_branch}
+```
+
+Or if it's a good branch, push it to the remote:
+
+```sh
+remote=origin
+git push $remote ${feature_branch}
+```
+
+# Merging
+
+Once you like the feature, merge it into the main branch.  Switch to master then merge it:
+
+```sh
+git merge ${feature_branch}
+```
+
+And delete the branch, as you've already merged it:
+
+```sh
+git branch -d ${feature_branch}
+```
+

data/git/basics.md

@@ -1,202 +0,0 @@
----
-title: "git"
-tags: [ "data" ]
----
-# Starting
-
-## New Machines
-
-```sh
-git config --global user.email "$YOUR_EMAIL"
-```
-
-```sh
-git config --global user.name "$YOUR_NAME"
-```
-
-# New Git
-
-Decide on algorithm:
-
-- If you're scared of insecure hash-sums, go with `hash=sha256`.
-- If you don't know what a hash sum is, go with `hash=sha1`.
-
-## Init the Git
-
-Start a git in directory `${DIR}`:
-
-```sh
-git init --object-format=${hash} ${DIR}
-cd ${DIR}
-```
-
-Make a file explaining what the project does, and tell `git` to track it:
-
-```sh
-echo "I hereby solemnly swear never to commit a binary file." > README.md
-git add README.md
-```
-
-Then make the initial commit, explaining the change you just made:
-
-```sh
-git commit
-```
-
-# Working
-
-Once you make a change to some file, add it and make a commit explaining it.
-
-```sh
-git add $FILE
-```
-
-```sh
-git commit -m"change $FILE"
-```
-
-Check your history:
-
-```sh
-git log
-```
-
-# Remotes
-
-If you want to keep a copy on a public site such as Gitlab, so others can see it, then go there and create a blank project (no readme, nothing).
-Give it the same name as the `$DIR` directory, above.
-
-Add this as a remote:
-
-```sh
-REMOTE=gitlab
-git remote add $REMOTE  https://gitlab.com/$USERNAME/$DIR
-```
-
-Tell git you're pushing the branch "master" to the remote repo "origin": 
-
-```sh
-git push -u master origin
-```
-
-If someone makes a change on the remote, pull it down with:
-
-```sh
-git pull
-```
-
-# Branches
-
-A branch is a full copy of the project to test additional ideas.
-You can make a new branch called 'featurez' like this:
-
-```sh
-git branch $FEATURE_BRANCH
-```
-
-Have a look at all your branches:
-
-```sh
-git branch
-```
-
-Switch to your new branch:
-
-```sh
-git checkout $FEATURE_BRANCH
-```
-
-And if your changes are rubbish, checkout the "master" branch again, then delete "featurez":
-
-```sh
-git branch -D $FEATURE_BRANCH
-```
-
-Or if it's a good branch, push it to the remote:
-
-```sh
-remote=origin
-git push $remote $FEATURE_BRANCH
-```
-
-## Merging
-
-Once you like the feature, merge it into the main branch.  Switch to master then merge it:
-
-```sh
-git merge $FEATURE_BRANCH
-```
-
-And delete the branch, as you've already merged it:
-
-```sh
-git branch -d $FEATURE_BRANCH
-```
-
-# Subtree
-
-## Pulling another git repo into a subtree
-
-```sh
-git subtree add -P config git@gitlab.com:bindrpg/config.git master
-```
-
-# Tricks
-
-## Delete All History
-
-```sh
-git checkout --orphan temp
-```
-
-```sh
-git add -A
-```
-
-```sh
-git commit -am "release the commits!"
-```
-
-```sh
-git branch -D master
-```
-
-```sh
-git branch -m master
-```
-
-```sh
-git push -f origin master
-```
-
-Gitlab requires more changes, such as going to `settings > repository` and switching the main branch, then stripping protection.
-
-## Clean up Bloated Repo
-
-```sh
-git fsck --full
-```
-
-```sh
-git gc --prune=now --aggressive
-```
-
-```sh
-git repack
-```
-
-## Find Binary Blobs
-
-```sh
-git rev-list --objects --all \
-| git cat-file --batch-check='%(objecttype) %(objectname) %(objectsize) %(rest)' \
-| sed -n 's/^blob //p' \
-| sort --numeric-sort --key=2 \
-| cut -c 1-12,41- \
-| $(command -v gnumfmt || echo numfmt) --field=2 --to=iec-i --suffix=B --padding=7 --round=nearest
-
-```
-
-# More
-
-For big binary files (like images), see [git large-file-storage](git-lfs.md)

data/git/commit_for_another.md

@@ -1,6 +1,10 @@
 ---
-title: "Commit for Another"
-tags: [ "data", "git" ]
+title: Commit for Another
+tags: 
+- data
+- git
+requires: 
+- data/git.md
 ---
 
 You can make Alice the author, while you are still the commiter:

data/git/git-lfs.md

@@ -1,6 +1,10 @@
 ---
-title: "git-lfs"
-tags: [ "data", "git" ]
+title: git-lfs
+tags: 
+- data
+- git
+requires: 
+- data/git.md
 ---
 
 Git Large File Storage ('LFS') needs to change your `~/.gitconfig` to check out those binary files:

data/git/git_secret.md

@@ -1,6 +1,9 @@
 ---
-title: "git-secret"
-tags: [ "data", "git" ]
+title: git-secret
+tags: 
+- data
+- git
+- review
 ---
 
 This utility is largely useless, as it can only identify people by their email.

data/git/git_stash.md

@@ -0,0 +1,72 @@
+---
+title: git stash
+tags: 
+- data
+- git
+requires: 
+- data/git.md
+---
+
+Save file-changes without committing anything.
+
+Change a file:
+
+```sh
+file=README.md
+fortune >> ${file}
+git diff
+git stash save
+```
+
+List which stashes you have:
+
+
+```sh
+git stash list
+
+    stash@{1}: WIP on master: c21f102 init git
+```
+
+Make a new file, then stash it:
+
+
+```sh
+otherfile=file.log
+fortune > ${otherfile}
+git add ${otherfile}
+stashname=logfile
+git stash save ${stashname}
+```
+
+Now you can see two stashed changes, and the most recent has a name:
+
+```sh
+git stash list
+
+    stash@{0}: On master: logfile
+    stash@{1}: WIP on master: c21f102 init git
+```
+
+You can delete a stash by referring to its index number, or name (if it has one).
+
+```sh
+choice=1
+git stash drop ${choice}
+
+choice=${stashname}
+git stash drop ${choice}
+```
+
+Or just run `git stash drop` to remove the most recent (labelled `{0}`).
+
+Return stashed changes with an index number (or the most recent).
+
+```sh
+git stash pop ${choice}
+```
+
+Delete all stashes:
+
+```sh
+git stash clear
+```

data/git/hooks.md

@@ -1,19 +1,21 @@
 ---
-title: "git hooks"
-tags: [ "data", "git" ]
+title: git hooks
+tags: 
+- data
+- git
 ---
 
 Check out the sample hooks:
 
-```bash
-cd $GIT_REPO
+```sh
+cd ${git_repo}
 ls .git/hooks
 head .git/hooks/pre-commit.sample
 ```
 
 Add a hook to check the shell scripts in `$GIT_REPO` before making a commit:
 
-```bash
+```sh
 echo '#!/bin/sh
 shellcheck *.sh' > .git/hooks/commit-msg
 chmod u+x .git/hooks/commit-msg
@@ -21,7 +23,9 @@ chmod u+x .git/hooks/commit-msg
 
 ## Committing
 
-Your `git hooks` will not enter the repository, but you can commit them to a repository, then request others add these git hooks to their own branch, by putting a note in the project's `README.md`.
+The `git hooks` will not work on other people who use the repository, but you
+can commit them to a repository, then request others add these git hooks to
+their own branch, by putting a note in the project's `README.md`.
 
 ```markdown
 The project comes with recommended git hooks.

data/git/subtree.md

@@ -1,34 +0,0 @@
----
-title: "git subtree"
-tags: [ "data", "git", "subtree" ]
----
-
-## Pulling a Subtree from an existing git
-
-The project has subdirectories `sub-1`, `sub-2`, `sub-3`.
-The first should be its own repository, but should also retain its own history.
-
-First, we extract its history as an independent item, and make that into a seprate branch.
-
-```bash
-git subtree split --prefix=sub-1 -b sub
-```
-
-If you want something a few directories deep, you can use `--prefix=sub-1/dir-2/dir-3
-
-Then go and create a new git somewhere else:
-
-```bash
-cd ..;mkdir sub-1;cd sub-1;git init --bare
-```
-
-Then go back to your initial git repo, and do the following:
-
-git push ../subtest sub:master
-
-Finally, you can clone this repo from your original.
-
-```bash
-git clone ../subtest
-```
-

data/gpg.md

@@ -1,7 +1,149 @@
 ---
-title: "gpg"
-tags: [ "data", "gpg" ]
+title: GPG Basics
+tags: 
+- data
+- GPG
 ---
 
-- [Setup](gpg/basics.md)
-- [Extras](gpg/extras.md)
+# Making keys
+
+Generate keys:
+
+```sh
+gpg --full-generate-key
+```
+
+Follow the guide.
+
+# Encrypting a file
+
+```sh
+gpg -r malinfreeborn@posteo.net -e file
+```
+
+`-r` specifies the recipient.
+
+Check you have an encrypted version of your file.
+
+# Changing Expiration Dates
+
+
+```sh
+gpg --list-keys
+# or...
+gpg -k
+```
+
+... and then use the second part of 'pub', which is the ID.  But that's not appearing here so... on with gpg2?
+
+# Making encrypted files with a local password
+
+Make a password with a password (cypher encryption).
+
+```sh
+gpg -c --output passwords.txt
+```
+
+or 
+
+```sh
+gpg -c > passwords.txt
+```
+
+Put in a password.
+
+Write message then stop with Ctrl+d.
+
+Get the message back out the file with:
+
+```sh
+gpg -d passwords.txt
+```
+
+# Circles of Trust
+
+Search for a key at any key store:
+
+```sh
+gpg --search-keys nestorv
+```
+
+Once you've made a decision about someone:
+
+```sh
+gpg --list-keys
+```
+
+You get something like this:
+
+```
+pub   rsa3072 2021-08-15 [SC] [expires: 2023-08-15]
+      CD30421FD825696BD95F1FF644C62C57B790D3CF
+uid           [ultimate] Malin Freeborn <malinfreeborn@posteo.net>
+sub   rsa3072 2021-08-15 [E] [expires: after-forever]
+
+```
+
+Notice the long, ugly, string - `CD30421FD825696BD95F1FF644C62C57B790D3CF` - and how horribly ugly it is.
+This is a fingerprint.
+
+You can now decide the trust level (this stays on your computer).
+
+```sh
+gpg --edit-key CD30421FD825696BD95F1FF644C62C57B790D3CF
+```
+
+Once you're in the interface, type `trust`.
+
+```sh
+gpg --sign-key alice@posteo.net
+```
+
+# Swapping Keys
+
+This system relies on a ring of people swapping key information.
+
+## Sending
+
+Send those trusted keys up to a server, so people can see you have verified them:
+
+```sh
+gpg --send-keys 024C6B1C84449BD1CB4DF7A152295D2377F4D70F
+```
+
+## Upload Your Keys
+
+## Add More Key Servers
+
+Key servers often swap keys, but it's best to just send to multiple places immediately.
+You can add key servers by adding this to `~/.gnupg/gpg.conf`.
+
+```
+keyserver hkps://keys.openpgp.org
+keyserver hkps://mail-api.proton.me
+keyserver hkps://keys.mailvelope.com
+```
+
+# Refresh Keys
+
+Refreshing keys will tell you if some key you have contains a signature from someone you already trust, or if someone has published a revocation certificate (meaning their key should not be trusted any more).
+
+```sh
+gpg --refresh-keys
+```
+
+You can use the [crontab](system/cron.md) to refresh keys, but this will mostly fail, since keyservers often don't hold the right data.
+
+# Export
+
+Your public key:
+
+```sh
+gpg --output me.gpg --armor --export
+```
+Alternatively:
+
+```sh
+gpg --export -a person@email.tld > my_key.pub
+```
+

data/gpg/basics.md

@@ -1,146 +0,0 @@
----
-title: "GPG Basics"
-tags: [ "data", "GPG" ]
----
-# Making keys
-
-Generate keys:
-
-```bash
-gpg --full-generate-key
-```
-
-Follow the guide.
-
-# Encrypting a file
-
-```bash
-gpg -r malinfreeborn@posteo.net -e file
-```
-
-`-r` specifies the recipient.
-
-Check you have an encrypted version of your file.
-
-# Changing Expiration Dates
-
-
-```bash
-gpg --list-keys
-# or...
-gpg -k
-```
-
-... and then use the second part of 'pub', which is the ID.  But that's not appearing here so... on with gpg2?
-
-# Making encrypted files with a local password
-
-Make a password with a password (cypher encryption).
-
-```bash
-gpg -c --output passwords.txt
-```
-
-or 
-
-```bash
-gpg -c > passwords.txt
-```
-
-Put in a password.
-
-Write message then stop with Ctrl+d.
-
-Get the message back out the file with:
-
-```bash
-gpg -d passwords.txt
-```
-
-# Circles of Trust
-
-Search for a key at any key store:
-
-```bash
-gpg --search-keys nestorv
-```
-
-Once you've made a decision about someone:
-
-```bash
-gpg --list-keys
-```
-
-You get something like this:
-
-```
-pub   rsa3072 2021-08-15 [SC] [expires: 2023-08-15]
-      CD30421FD825696BD95F1FF644C62C57B790D3CF
-uid           [ultimate] Malin Freeborn <malinfreeborn@posteo.net>
-sub   rsa3072 2021-08-15 [E] [expires: after-forever]
-
-```
-
-Notice the long, ugly, string - `CD30421FD825696BD95F1FF644C62C57B790D3CF` - and how horribly ugly it is.
-This is a fingerprint.
-
-You can now decide the trust level (this stays on your computer).
-
-```bash
-gpg --edit-key CD30421FD825696BD95F1FF644C62C57B790D3CF
-```
-
-Once you're in the interface, type `trust`.
-
-```bash
-gpg --sign-key alice@posteo.net
-```
-
-# Swapping Keys
-
-This system relies on a ring of people swapping key information.
-
-## Sending
-
-Send those trusted keys up to a server, so people can see you have verified them:
-
-```bash
-gpg --send-keys 024C6B1C84449BD1CB4DF7A152295D2377F4D70F
-```
-
-## Upload Your Keys
-
-## Add More Key Servers
-
-Key servers often swap keys, but it's best to just send to multiple places immediately.
-You can add key servers by adding this to `~/.gnupg/gpg.conf`.
-
-```
-keyserver hkps://keys.openpgp.org
-keyserver hkps://mail-api.proton.me
-keyserver hkps://keys.mailvelope.com
-```
-
-# Refresh Keys
-
-Refreshing keys will tell you if some key you have contains a signature from someone you already trust, or if someone has published a revocation certificate (meaning their key should not be trusted any more).
-
-```bash
-gpg --refresh-keys
-```
-
-You can use the [crontab](../../basics/cron.md) to refresh keys, but this will mostly fail, since keyservers often don't hold the right data.
-
-# Export
-
-Your public key:
-
-```bash
-gpg --output me.gpg --armor --export
-```
-Alternatively:
-
-```bash
-gpg --export -a person@email.tld > my_key.pub
-```
-

data/gpg/extras.md

@@ -1,11 +0,0 @@
----
-title: "gpg with vim"
-tags: [ "vim", "data", "GPG" ]
-requires: [ "GPG Basics", "vim basics" ]
----
-
-The `vim-gnupg` plugin lets vim edit gpg-encrypted files as if they were unencrypted.
-
-It's probably in your package manager.
-If not, you'll need to endure the faff of following the [instructions](http://www.vim.org/scripts/script.php?script_id=3645).
-

data/gpg/gpg_pinentry.md

@@ -0,0 +1,34 @@
+---
+title: GPG Password Entry
+tags: 
+- vim
+- secrets
+- TUI
+requires: 
+- data/gpg.md
+- writing/vim.md
+---
+
+
+Check your current gpg-agent configuration:
+
+```sh
+gpgconf --list-options gpg-agent
+```
+
+Create file, if it doesn't exit `~/.gnupg/gpg-agent.conf`:
+
+```
+# Force terminal prompts for passwords
+pinentry-mode loopback
+
+# Optional: specify which pinentry program to use
+pinentry-program /usr/bin/pinentry-tty
+```
+
+Then restart gpg-agent:
+
+```sh
+gpg-connect-agent reloadagent /bye
+```
+

data/gpg/vim_decryption.md

@@ -0,0 +1,17 @@
+---
+title: Edit gpg encrypted files with vim
+tags: 
+- vim
+- data
+- gpg
+- comfy
+requires: 
+- data/gpg.md
+- writing/vim.md
+---
+
+The `vim-gnupg` plug-in lets vim edit gpg-encrypted files as if they were unencrypted.
+
+It's probably in your package manager.
+If not, you'll need to endure the faff of following the [instructions](http://www.vim.org/scripts/script.php?script_id=3645).
+

data/groff.md

@@ -1,6 +1,9 @@
 ---
-title: "groff"
-tags: [ "data", "logic" ]
+title: groff
+tags: 
+- documentation
+- typography
+- logic
 ---
 # Basic Documents
 
@@ -60,8 +63,6 @@ The equation shorthands are predictable:
 | Not equal  | !=      |
 | Superscript | sup {thing} |
 
-- [List of symbols](https://www.math-linux.com/man/man7/groff_char.7.html)
-
 ### Examples
 
 The fraction 2/5ths:

data/interactive_string_substitution.md

@@ -1,6 +1,11 @@
 ---
-title: "Interactive String Substitution"
-tags: [ "data", "vim", "substitution" ]
+title: Interactive String Substitution
+tags: 
+- data
+- vim
+- substitution
+- replace
+- TUI
 ---
 
 Want to find and replace, but also confirm each instance?

data/json.md

@@ -0,0 +1,16 @@
+---
+title: ijq
+tags: 
+- data
+- json
+- TUI
+---
+
+Analyse `json` easier with `ijq`.
+
+```sh
+column -J -ts: -H PW,GID,shell -N User,PW,UID,GID,Description,Home,shell /etc/passwd > host.json
+ijq !$
+```
+
+If you get stuck, try adding `.[]`.

data/khard.md

@@ -1,6 +1,7 @@
 ---
-title: "khard"
-tags: [ "data" ]
+title: khard
+tags: 
+- data
 ---
 Get the basic config:
 

data/newsboat.md

@@ -1,18 +1,19 @@
 ---
-title: "newsboat"
-tags: [ "RSS" ]
+title: newsboat
+tags: 
+- RSS
 ---
 Create the configuration directory before you start, and add at least 1 URL.
 
-```bash
+```sh
 mkdir ~/.config/newsboat
 ```
 
-```bash
+```sh
 echo 'https://voidlinux.org/atom.xml foss tech' >> ~/.config/newsboat/urls
 ```
 
-Start `newsobat` and press `r` to load your feed.
+Start `newsboat` and press `r` to load your feed.
 
 To add a feed, you can press `E` to edit that `urls` file.
 
@@ -28,7 +29,7 @@ You can input a Youtube channel by adding this, with the channel's ID at the end
 
 To get the channel ID without hunting:
 
-```bash
+```sh
 curl *'https://www.youtube.com/@1minfilms'* | grep -oE 'browseId":"U\w+"' | tail | cut -d'"' -f3 
 ```
 

data/newsraft.md

@@ -0,0 +1,68 @@
+---
+title: Newsraft
+tags: 
+- data
+- RSS
+---
+
+# Setup
+
+Install newsraft, then:
+
+```sh
+mkdir ~/.config/newsraft
+echo 'https://codeberg.org/newsraft/newsraft.atom "Newsraft git"' >> ~/.config/newsraft/feeds
+newsraft
+```
+
+# Commands
+
+Copy the default config file:
+
+```
+cp /usr/share/doc/newsraft/example/config ~/.config/newsraft/config
+
+```
+
+Add a line to check the man page while inside the program:
+
+```
+bind M exec man newsraft
+```
+
+This will fail, because the letter 'M' is taken by `mpv`.
+
+Add this line to take the default link, and place it in a list of videos.
+
+```
+bind V mark-read; exec echo "%l" >> ~/.cache/vidlist.txt
+```
+
+# Videos
+
+You can get an RSS feed from any YouTube video with this script:
+
+```
+#!/bin/sh
+
+set -e
+
+db=~/rec/feeds.rec
+
+rec="${2:-$db}"
+
+[ ! -z "$1" ] || {
+    echo "Give me a youtube URL"
+    exit 1
+}
+
+[ -w "$rec" ] || touch "$rec"
+
+CHANNEL_ID="$(curl -s "$1" | tr ',' '\n'  | grep -Po 'channelId":"\K[\w+-]+' | tail -1)"
+URL="https://www.youtube.com/feeds/videos.xml?channel_id=$CHANNEL_ID"
+Name="$(curl -s "$URL" | grep -m 1 -Po 'title\>\K[\w\s]+')"
+
+recins --verbose -t Feed -f Name -v "${Name}" -f URL -v "${URL}" -f Category -v Videos -f Rating -v 3 -f Working -v yes "$rec"
+```
+
+

data/pass.md

@@ -1,10 +1,14 @@
 ---
-title: "pass"
-tags: [ "data" ]
-requires: "GPG Basics"
+title: pass
+tags: 
+- data
+- credentials
+- secrets
+requires: 
+- data/gpg.md
 ---
 
-Setup [gpg](./gpg.md) keys.
+Setup [gpg](data/gpg.md) keys.
 
 Show your gpg secret it:
 
@@ -15,28 +19,37 @@ gpg --list-secret-keys
 Then use the id number under `sec` to make a pass repo:
 
 ```sh
-KEY="$(gpg --list-secret-keys  | grep -m 1 -A1 '^sec' | tail -n 1)"
+key="$(gpg --list-secret-keys  | grep -m 1 -A1 '^sec' | tail -n 1)"
 ```
 
 ```sh
-pass init $KEY
+pass init $key
+cat .password-store/.gpg-id
 ```
 
-To add a basic password, e.g. for `$WEBSITE`:
+To add a basic password, e.g. for `${website}`:
 
 ```sh
-pass $WEBSITE
+pass ${website}
 ```
 
-To insert a multiline password, e.g. with a login name:
+To insert a multi-line password, e.g. with a login name:
 
 ```sh
-pass add -m $WEBSITE
+pass add -m ${website}
 ```
 
 Remove a password:
 
 ```sh
-pass rm $WEBSITE
+pass rm ${website}
 ```
 
+You can generate passwords with `xkcdpass`.
+
+Automatically insert a password with `pass insert`:
+
+
+```sh
+xkcdpass | pass insert --echo ${website}
+```

data/pass_otp.md

@@ -0,0 +1,54 @@
+---
+title: pass with otp
+tags: 
+- data
+- credentials
+- secrets
+- 2fa
+- otp
+requires: 
+- data/pass.md
+---
+
+Need a Microsoft or Google authenticator?
+No you don't.
+
+These usually come in the form of QR codes.
+
+
+```qr code
+
+                                 
+    █▀▀▀▀▀█ ▀ ▀▀▀ ▀ ▄ █▀▀▀▀▀█    
+    █ ███ █ ▄▄▀▄▄▀▄▄▀ █ ███ █    
+    █ ▀▀▀ █ ██ ▀▄██▀▀ █ ▀▀▀ █    
+    ▀▀▀▀▀▀▀ █ █▄▀ █ █ ▀▀▀▀▀▀▀    
+    █▄▄ █▄▀▀██ ▄▄▀▀▄██▀▀██ ▄▀    
+    ▄██▄▀█▀█ ▀▄▀ █▀▀▀█ ▀▀▀█▄     
+    ▄ ▄▄█ ▀▀ ▄▄▀▀█▄█ ▀▀ ▄▀▀█▀    
+      █ ▀ ▀▀█▀▀ ▄ ▄█▀▄▀██▀█▄     
+    ▀▀▀ ▀ ▀ █▄▄▀▄▀▀▄█▀▀▀█▀▀      
+    █▀▀▀▀▀█ ▀▄ █▀█▀ █ ▀ █▄▄      
+    █ ███ █ ▀ ▄ ▀█▄ ████▀▀█▄█    
+    █ ▀▀▀ █  ▄▀ ▄ ▄▄ ██▄▄█▄█     
+    ▀▀▀▀▀▀▀ ▀ ▀▀ ▀▀▀ ▀▀   ▀▀▀    
+                                 
+                                 
+```
+
+Download the code, and get the information out:
+
+
+```sh
+zbarimg qr.png 
+otp="$(zbarimg qr.png | sed 's/QR-Code://')"
+otp_name=site.org.otp
+echo "${otp}" | pass otp add --echo "${otp_name}"
+```
+
+Show the OTP:
+
+
+```sh
+pass otp "${otp_name}"
+```

data/pdf-to-txt.md

@@ -1,6 +1,9 @@
 ---
-title: "pdf to txt"
-tags: [ "data", "pdf", "ocr" ]
+title: Convert a scanned pdf to text
+tags: 
+- data
+- pdf
+- ocr
 ---
 
 How to translate pdfs to text (results are very poor, and will need lots of corrections).
@@ -13,11 +16,11 @@ Arch: tesseract-data-eng and poppler-utils
 
 ## Script
 
-```bash
+```sh
 pdftoppm -png *file*.pdf test
 ```
 
-```bash
+```sh
 for x in *png; do
     tesseract -l eng  "$x" - >> out.txt
 done

data/pdf-to-txt.sh

@@ -1,25 +0,0 @@
-#!/bin/bash
-
-pdftoppm -png input.pdf page
-
-for x in *png; do
-	tesseract -l eng  "$x" - >> out.tex
-done
-
-rm *png
-
-sed -i -ze :a -e 's/\([a-z]\)\(-\)\n\+\([a-zA-Z]\)/\1\3/g' out.tex
-sed -i -ze :a -e 's/\([a-z]\)\n\+\([a-zA-Z]\)/\1 \2/g' out.tex
-sed -i -ze :a -e 's/\([A-Z]\){3}\+\n/\1 XYZ/g' out.tex
-sed -i -ze :a -e 's/\n\([A-Z]\{3\}\+\)\n/\\section{\1}\n/g' out.tex
-sed -i -ze :a -e 's/\([a-z]\)\. \([A-Z]\)/\1\.\n\2/g' out.tex
-
-sed -i 's/“//g' out.tex
-sed -i "s/”/''/g" out.tex
-sed -i "s/’/'/g" out.tex
-sed -i "s/‘/'/g" out.tex
-sed -i "s/\.''/''\./g" out.tex
-sed -i "s/ — / -- /g" out.tex
-sed -i 's/\$/\\$/g' out.tex
-sed -i 's/%/\\%/g' out.tex
-sed -i 's/&/\\&/g' out.tex

data/pdf_erasure.md

@@ -1,6 +1,10 @@
 ---
-title: "PDF Metadata Erasure"
-tags: [ "metadata", "ghost script", "gs", ".pdf" ]
+title: PDF Metadata Erasure
+tags: 
+- metadata
+- ghost script
+- gs
+- pdf
 ---
 
 You cannot erase pdf metadata with `exiftool` (it only *appends* your changes).
@@ -23,6 +27,6 @@ Make a text file called 'pdfmark.txt'.
 
 Then run:
 
-```bash
+```sh
 gs -o output.pdf -sDEVICE=pdfwrite "$FILE".pdf pdfmark.txt
 ```

data/radicale.md

@@ -1,7 +1,10 @@
 ---
-title: "radicale and nginx"
-tags: [ "data", "calendar" ]
-requires: [ "nginx", "certbot" ]
+title: radicale and nginx
+tags: 
+- data
+- calendar
+requires: 
+- networking/nginx.md
 ---
 
 Check before you start:
@@ -16,7 +19,7 @@ The standard `radicale` package should come with a nice `systemd` service file.
 
 If the service comes already-started, stop it immediately:
 
-```bash
+```sh
 sudo systemctl stop radicale
 ```
 
@@ -40,11 +43,12 @@ You might get it in the `apache` package or similar.
 
 `htpasswd` allows you to generate passwords for users, and place them in `/etc/radicale/users`.
 
-```bash
-PASS="$(xkcdpass)"
-htpasswd -nb $USER "$PASS" | sudo tee -a /etc/radicale/users
-echo "Your username is $USER"
-echo "Your password is $PASS"
+```sh
+pass="$(xkcdpass)"
+username=alice
+htpasswd -nb ${username} "${pass}" | sudo tee -a /etc/radicale/users
+echo "Your username is ${username}"
+echo "Your password is ${pass}"
 ```
 Right now, you can't sign into the server except through the localhost, which is pointless.
 So now we add a subdomain to `nginx`.
@@ -93,27 +97,27 @@ sudo ln -s /etc/nginx/sites-available/radicale /etc/nginx/sites-enables/
 
 Finally, replace the example `DOMAIN` with your actual domain name.
 
-```bash
-DOMAIN=whatever.com
-sudo sed -i "s/DOMAIN/$DOMAIN/g" /etc/nginx/sites-available/radicale 
+```sh
+domain=whatever.com
+sudo sed -i "s/DOMAIN/${domain}/g" /etc/nginx/sites-available/radicale 
 ```
 
 (optional: replace that `cal.` prefix with anything else)
 
 Check nginx is happy:
 
-```bash
+```sh
 sudo nginx -t
 ```
 You will almost certainly need a new SSL certificate for the site:
 
-```bash
-sudo certbod -d cal.$DOMAIN
+```sh
+sudo certbod -d cal.${domain}
 ```
 
 Start or restart both services:
 
-```bash
+```sh
 sudo systemctl start radicale
 sudo systemctl restart nginx
 ```

data/recfiles.md

@@ -1,6 +1,8 @@
 ---
-title: "Recfiles"
-tags: [ "data", "database" ]
+title: Recfiles
+tags: 
+- data
+- database
 ---
 
 Create:
@@ -43,8 +45,8 @@ recset -f "$new_field" --delete $database
 ```
 
 - [Extended example](recfiles/extended.md)
-- [Playing with board games data](recfiles/Board_Games.md)
-- [Playing with IP addresses](recfiles/IP_ASN.md)
+- [Playing with board games data](recfiles/board_games.md)
+- [Playing with IP addresses](recfiles/ip_asn.md)
 - [Manage LaTeX Bibliographies](recfiles/bibliography.md)
 - [Fixes](recfiles/recfixes.md)
 

data/recfiles/bibliography.md

@@ -1,7 +1,14 @@
 ---
-title: "Recfile Bibliography for TeX"
-tags: [ "data", "database", "recfiles", "tex" ]
-requires: [ "Recfiles", "TeX", "Makefile" ]
+title: Recfile Bibliography for TeX
+tags: 
+- data
+- database
+- recfiles
+- tex
+requires: 
+- data/recfiles.md
+- writing/tex.md
+- system/makefiles.md
 ---
 
 Store your bibliography in a `recfile` database, then extract any part with `make`.

data/recfiles/board_games.md

@@ -1,7 +1,11 @@
 ---
-title: "Board Games with Recfiles"
-tags: [ "data", "recfiles", "games" ]
-requires: "Recfiles"
+title: Board Games with Recfiles
+tags: 
+- data
+- recfiles
+- games
+requires: 
+- data/recfiles.md
 ---
 
 You can play with a board games database from boardgamegeek.com.

data/recfiles/extended.md

@@ -1,93 +1,98 @@
 ---
-title: "Recfiles Extended Example"
-tags: [ "data", "database", "recfiles" ]
+title: Recfiles Extended Example
+tags: 
+- data
+- database
+- recfiles
+requires: 
+- data/recfiles.md
 ---
 
 ## Create
 
 Make a database for your boardgames, specifying only one field and value:
 
-```bash
+```sh
 database=games.rec
 n=Name
 g=Vojvodina
-touch $database
-recins -f $n --value $g $database
-recsel $database
+touch ${database}
+recins -f ${n} --value ${g} ${database}
+recsel ${database}
 ```
 
 Insert a few more, with the estimated playtime:
 
-```bash
-recins -f Name -v Saboter -f Playtime -v 30 $database
-recins -f Name -v Chess -f Playtime -v 30 $database
+```sh
+recins -f Name -v Saboter -f Playtime -v 30 ${database}
+recins -f Name -v Chess -f Playtime -v 30 ${database}
 ```
 
 View all games, or select one by number:
 
-```bash
-recsel $database
-recsel -n 0 $database
+```sh
+recsel ${database}
+recsel -n 0 ${database}
 ```
 
 Each game should note whether or not you have played it yet, so you can add that field and set the default to `yes`.
 
-```bash
+```sh
 f=played
 v=yes
-recset -f $f -a $v $database
+recset -f ${f} -a ${v} ${database}
 ```
 
 ...but the field is wrong, it should have a capital letter:
 
-```bash
+```sh
 new_field=Played
-recset -f $f --rename $new_field
+recset -f ${f} --rename ${new_field}
 ```
 
 ## Read
 
 Check how many records the database has:
 
-```bash
-recinf $database
+```sh
+recinf ${database}
 ```
 
 Look at just the games you've never played:
 
-```bash
-recsel --expression="Played = 'no'" $database
+```sh
+recsel --expression="Played = 'no'" ${database}
 ```
 
 Print how many, then just print the names:
 
-```bash
-recsel -e "Played = 'no'" --count $database
-recsel -e "Played = 'no'" --print=Name $database
+```sh
+recsel -e "Played = 'no'" --count ${database}
+recsel -e "Played = 'no'" --print=Name ${database}
 ```
 
 ## Update
 
 To change a game's `Played` field from `no` to `yes`, use `recset` to specify the number, and change that field.
 
-```bash
+```sh
 num=0
 f=Played
 value=yes
-recsel --number=$num $database
-recset --number=$num -f $f --set=$value $database
+recsel --number=${num} ${database}
+recset --number=${num} -f ${f} --set=${value} ${database}
 ```
 
 Find all games with a playtime of `30`, and set the field `Max_Players` to `4`.
 
-```bash
+```sh
 recset -e "Playtime = 40" -f Max_Players --set 50 games.rec
 ```
 
 This doesn't work, because that field does not exist.
 You can `--set-add` the field, to add it wherever it does not exist.
 
-```bash
+```sh
 recset -e "Playtime = 40" -f Max_Players --set-add 50 games.rec
 ```
 
@@ -95,24 +100,24 @@ recset -e "Playtime = 40" -f Max_Players --set-add 50 games.rec
 
 Remove `Played` record from first game:
 
-```bash
+```sh
 num=0
-recset --number=$num -f Played --delete $database
+recset --number=${num} -f Played --delete ${database}
 ```
 
 You can comment the line instead of deleting it:
 
-```bash
+```sh
 num=1
-recset --number=$num -f Played --delete $database
-recsel $database
-cat $database
+recset --number=${num} -f Played --delete ${database}
+recsel ${database}
+cat ${database}
 ```
 
 Delete an entire record:
 
-```bash
+```sh
 num=2
-recdel --number=$num $database
+recdel --number=${num} ${database}
 ```
 

data/recfiles/ip_asn.md

@@ -1,7 +1,11 @@
 ---
-title: "IP Addresses with Recfiles"
-tags: [ "data", "recfiles", "games" ]
-requires: "Recfiles"
+title: IP Addresses with Recfiles
+tags: 
+- data
+- recfiles
+- games
+requires:
+- data/recfiles.md
 ---
 
 ## Download the Database

data/recfiles/nginx_logs.md

@@ -0,0 +1,70 @@
+---
+title: nginx logs with recfiles
+tags: 
+- data
+- recfiles
+- logs
+requires: 
+- data/recfiles.md
+- networking/nginx.md
+---
+
+The standard `nginx` log format has such a lack of consistency or meaning that you might squint your face into a whirlpool making sense of them:
+
+
+```nonsense
+18.97.14.85 - - [16/Nov/2025:00:52:12 +0100] "GET /posts/learning_without_experts/content.html HTTP/1.1" 200 1704 "-" "CCBot/2.0 (https://commoncrawl.org/faq/)"
+57.141.0.25 - - [16/Nov/2025:00:52:18 +0100] "GET /posts/hope_you_win/ HTTP/1.1" 200 61997 "-" "meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)"
+201.17.157.249 - - [16/Nov/2025:00:52:19 +0100] "GET https://ttrpgs.com/post/wp/ HTTP/1.1" 200 45202 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36"
+47.246.164.151 - - [16/Nov/2025:00:52:22 +0100] "GET https://ttrpgs.com/css/styles.dc38388a8f0b890e788bd3a99b7495d14e7d5ac4359ed3b49abeb778497863b284ad4cc7e496ef58c84139295f9bafed82f5a41345eda86bd2d429cccb7c2596.css HTTP/1.1" 200 27109 "https://ttrpgs.com/post/wp/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36"
+47.246.164.154 - - [16/Nov/2025:00:52:22 +0100] "GET https://ttrpgs.com/fonts/Metropolis-MediumItalic.woff2 HTTP/1.1" 200 28100 "https://ttrpgs.com/css/styles.dc38388a8f0b890e788bd3a99b7495d14e7d5ac4359ed3b49abeb778497863b284ad4cc7e496ef58c84139295f9bafed82f5a41345eda86bd2d429cccb7c2596.css" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36"
+47.246.164.135 - - [16/Nov/2025:00:52:22 +0100] "GET https://ttrpgs.com/fonts/Metropolis-Regular.woff2 HTTP/1.1" 200 24152 "https://ttrpgs.com/css/styles.dc38388a8f0b890e788bd3a99b7495d14e7d5ac4359ed3b49abeb778497863b284ad4cc7e496ef58c84139295f9bafed82f5a41345eda86bd2d429cccb7c2596.css" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36"
+```
+
+Someone created this logging format on purpose, to make sure nobody could parse it with a hundred `column`, `cut`, or `awk` pipes.
+
+The problem lies in `/etc/nginx/nginx.conf`:
+
+
+```conf
+log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                  '$status $body_bytes_sent "$http_referer" '
+                  '"$http_user_agent" "$http_x_forwarded_for"';
+```
+
+Despite a request of three strings, this format returns one string.
+
+It can output to recfile format like this:
+
+
+```conf
+log_format  main  '\nIP: $remote_addr\n'
+                 'User: $remote_user\n'
+                 'Date: $time_local\n'
+                 'Request: $request\n'
+                 'Status: $status\n'
+                 'Bytes: $body_bytes_sent\n'
+                 'Referrer: $http_referer\n'
+                 'Agent: $http_user_agent\n'
+                 'XForward: $http_x_forwarded_for\n';
+
+access_log  /var/log/nginx/access.rec  main;
+```
+
+Note the newline (`\n`) symbol, required to start a new entry on a new line.
+
+1. `cp /etc/nginx.conf /etc/nginx.conf.bak`
+1. Change `/etc/nginx.conf` to match the format above.
+1. Check the file works with `nginx -t`.
+1. Restart the `nginx` service.
+1. Access that web page to make sure that at least one log exists.
+1. Check the file with `recfix /var/log/nginx/access.rec`.
+
+Once it works, you can add the usual recfile headers:
+
+
+```sh
+sed -i '1 i \ ' /var/log/nginx/access.rec
+sed -i '1 i %rec: Weblog' /var/log/nginx/access.rec
+sed -i '2 i %doc: nginx access logs' /var/log/nginx/access.rec
+```

data/recfiles/recfixes.md

@@ -1,7 +1,10 @@
 ---
-title: "Recfixes"
-tags: [ "data", "recfiles" ]
-requires: "Recfiles"
+title: Recfixes
+tags: 
+- data
+- recfiles
+requires: 
+- data/recfiles.md
 ---
 
 Sometimes `recsel` chokes on a large query, and you need to break the query into chunks with a pipe.

data/sc-im.md

@@ -1,11 +1,14 @@
 ---
-title: "sc-im"
-tags: [ "TUI", "data", "spreadsheet", ".csv" ]
-requires: [ "vim basics" ]
+title: sc-im
+tags: 
+- TUI
+- data
+- spreadsheet
+- csv
+requires: 
+- writing/vim.md
 ---
 
-- [Sample file](sc-im/sample.sc)
-
 # Basic Commands
 
 ## See Cells
@@ -15,7 +18,7 @@ Change this with `:set autowrap`.
 
 Make `sc-im` always autowrap:
 
-```bash
+```sh
 mkdir .config/sc-im/bash
 echo 'set autowrap' >> .config/sc-im/scimrc
 ```

data/sc-im/convert_spreadsheets.md

@@ -1,6 +1,8 @@
 ---
-title: "Convert Spreadsheets"
-tags: [ "data", "sc-im" ]
+title: Convert Spreadsheets
+tags: 
+- data
+- sc-im
 ---
 
 Convert between spreadsheet formats with `sc-im`.

data/sc-im/sample.sc

@@ -1,38 +0,0 @@
-# This data file was generated by the Spreadsheet Calculator Improvised (sc-im)
-# You almost certainly shouldn't edit it.
-
-newsheet "Sheet1"
-movetosheet "Sheet1"
-offscr_sc_cols 0
-offscr_sc_rows 0
-nb_frozen_rows 1
-nb_frozen_cols 0
-nb_frozen_screenrows 2
-nb_frozen_screencols 0
-format A 14 1 0
-format B 18 2 0
-format 0 2
-freeze 0
-label A0 = "Food by Weight"
-leftstring B0 = "No. Meals"
-leftstring A1 = "Ajvar"
-let A1 = 5
-let B1 = A1*$A$10
-leftstring A2 = "Apples"
-let A2 = 3
-let B2 = A2*$A$10
-leftstring A3 = "Rocket"
-let A3 = 0.2
-let B3 = A3*$A$10
-leftstring A4 = "Beli Cheese"
-let A4 = 1
-let B4 = A4*$A$10
-leftstring A6 = "Total"
-let A6 = @sum(A1:A4)
-leftstring B6 = "Total"
-let B6 = @sum(B1:B4)
-leftstring A7 = "Average"
-let A7 = @avg(A1:A4)
-leftstring A10 = "Weight of Meal"
-let A10 = 0.3
-goto A0

data/search_system.md

@@ -1,7 +1,12 @@
 ---
-title: "Search System"
-tags: [ "data", "search", "locate", "plocate" ]
-requires: "cron"
+title: Search System
+tags: 
+- data
+- search
+- locate
+- plocate
+requires:
+- system/cron.md
 ---
 
 You can search every file on the computer instantly by installing `plocate`.
@@ -21,7 +26,7 @@ Once you have the database, you can find nearly any file instantly.
 - Search for jpg images with 'dog' or 'Dog' in the name: `locate -i dog jpg`
 - Search for videos: `plocate --regex '.mp4$|.mkv$|.wmv$|.webm$|.mov$|.avi$'`
 
-For best results, run `updatedb` regularly, perhaps in [crontab](../system/cron.md).
+For best results, run `updatedb` regularly, perhaps in [crontab](system/cron.md).
 
 ## Search More Places
 
@@ -33,7 +38,7 @@ By default, the `/mnt` directory is 'pruned' from the database.
 So if you want to search `/mnt` for videos, remove the word `/mnt` from the configuration file.
 
 
-```bash
+```sh
 su root
 cat /etc/updatedb.conf
 sed -i 's#/mnt/##' /etc/updatedb.conf

data/search_video_audio.md

@@ -1,6 +1,8 @@
 ---
-title: "Search Video Audio"
-tags: [ "data", "video" ]
+title: Search Video Audio
+tags: 
+- data
+- video
 ---
 
 Check subtitles available:

data/sharing_secrets.md

@@ -1,13 +1,16 @@
 ---
-title: "Sharing Secrets"
-tags: [ "data", "death", "secrets", "ssss" ]
+title: Sharing Secrets
+tags: 
+- data
+- death
+- secrets
 ---
 
 You can share parts of a secret with multiple people, so only some of them need to agree to see the secret.
 
 Install `ssss`, then decide on the total number of secrets (`N`), and the threshold of people who must share their shard of the secret in order to reveal the secret.
 
-```bash
+```sh
 N=5
 T=3
 FILE=secret.txt
@@ -17,7 +20,7 @@ Each shard is a line inside secret.txt.
 
 Check it's working:
 
-```bash
+```sh
 head -n $T $FILE | ssss-combine -t $T
 tail -n $T $FILE | ssss-combine -t $T
 ```

data/soft-serve.md

@@ -0,0 +1,14 @@
+---
+title: Soft-Serve
+tags: 
+- data
+- git server
+- lfs
+- TUI
+requires: 
+- data/git.md
+- networking/nginx.md
+---
+
+- [Soft-Serve with https](soft-serve/soft_https.md)
+- [Maintenance](soft-serve/soft_maintenance.md)

data/soft-serve/soft_https.md

@@ -1,7 +1,12 @@
 ---
-title: "Soft Serve through https"
-tags: [ "data", "git server", "lfs" ]
-requires: [ "git", "nginx" ]
+title: Soft Serve through https
+tags: 
+- data
+- git server
+- lfs
+requires: 
+- data/git.md
+- networking/nginx.md
 ---
 
 ## `http` Setup
@@ -30,13 +35,13 @@ http:
 
 Restart the `soft-serve` service, then check it's working by cloning from localhost:
 
-```bash
+```sh
 git clone http://localhost:23232/${some_repo}.git
 ```
 
 ### `https` Setup
 
-Put this file at `/etc/nginx/sites-enabled/$DOMAIN.tld`, then set up standard certificates with [nginx](../networking/website/nginx.md).
+Put this file at `/etc/nginx/sites-enabled/$DOMAIN.tld`, then set up standard certificates with [nginx](networking/nginx.md).
 
 (replace `${DOMAIN_NAME}` with your domain's name).
 

data/soft-serve/soft_maintenance.md

@@ -1,7 +1,12 @@
 ---
-title: "Soft Serve Maintenance"
-tags: [ "data", "git server", "maintenance" ]
-requires: [ "git", "nginx" ]
+title: Soft Serve Maintenance
+tags: 
+- data
+- git server
+- maintenance
+requires: 
+- data/git.md
+- networking/nginx.md
 ---
 
 Over time git repositories become bloated with old data, but never get cleaned.

data/soft.md

@@ -1,8 +0,0 @@
----
-title: "Soft-Serve"
-tags: [ "data", "git server", "lfs", "TUI" ]
-requires: [ "git", "nginx" ]
----
-
-- [Soft-Serve with https](soft-serve/soft_https.md)
-- [Maintenance](soft-serve/maintenance.md)

data/sqlite.md

@@ -1,11 +1,12 @@
 ---
-title: "sqlite"
-tags: [ "data" ]
+title: sqlite
+tags: 
+- data
 ---
 
 Work with a database:
 
-```bash
+```sh
 sqlite3 "$FILE".sqlite3
 ```
 Compress the database:

data/task/contexts.md

@@ -1,34 +0,0 @@
----
-title: "Taskwarrior Contexts"
-tags: [ "data", "task" ]
-requires: [ "Taskwarrior" ]
----
-
-# Contexts
-
-Set three contexts by their tags:
-
-```sh
-task context define work +sa or +hr
-```
-
-```sh
-task context define study +ed or +void or +rat
-```
-
-```sh
-task context define home -sa -hr -ed -void -rat
-```
-
-Change to the first context.
-
-```sh
-task context work
-```
-
-Then stop.
-
-```sh
-task context none
-```
-

data/task/task.md

@@ -1,115 +0,0 @@
----
-title: "Taskwarrior"
-tags: [ "data", "organization" ]
----
-
-Set up the configuration file:
-
-```sh
-task
-```
-
-Taskwarrior published a new feature to synchronize tasks others, but the feature was not ready.
-The server's default installation instructions assume that users pay for hosting services.
-All listed providers run proprietary software and actively support genocide.
-
-
-To ignore the synchronization, tell the configuration file to use a local synchronization file.
-
-```
-task config sync.local.server_dir
-task config data.location ~/.local/state/
-```
-
-Add a task:
-
-```sh
-task add update linux
-```
-
-See which task is next:
-
-```sh
-task next
-```
-
-Note the id number.
-
-Mark a task as started:
-
-```sh
-task start 1
-```
-
-Once finished:
-
-```sh
-task 1 done
-```
-
-# Projects
-
-Add a project:
-
-```sh
-task add project:house buy potted plant
-task add proj:house.repair buy screwdriver
-task add proj:house.repair buy shelf brackets
-task add pro:house.paint buy white paint
-
-for t in "buy red paint" "buy black paint" "buy brushes" ; do
-  task add pro:house.paint $t
-done
-```
-
-## Summary
-
-```sh
-task pro:house sum
-task burndown.daily pro:house
-```
-
-The summaries will show how fast a project is being completed, and when you can expect it to finish at the present rate.
-
-# Tags
-
-
-```sh
-task add +buy toothbrush
-task +buy
-```
-
-# Review
-
-View list of tasks completed in the last week:
-
-```sh
-task end.after:today-1wk completed
-```
-
-# User Defined Attributes
-
-Define a new attribute for tasks called 'size'.
-The 'user defined attribute' (UDA) needs a `type` and `label`.
-
-```sh
-task config uda.size.type string
-task config uda.size.label Size
-```
-You can also ensure task tasks can only be `large`, `medium`, or `small`, then set a default.
-
-```sh
-task config uda.size.values large,medium,small
-uda.size.default=medium
-```
-
-# Tricks
-
-This command shows tasks I'm most interested in:
-
-```sh
-task next +ACTIVE or +OVERDUE or due:today or scheduled:today or pri:H
-```
-
-The command is long, so `alias` is your friend.
-

data/task/taskwarrior_configuration.md

@@ -1,20 +0,0 @@
----
-title: "Taskwarrior Configuration"
-tags: [ "data", "task" ]
-requires: [ "Taskwarrior" ]
----
-
-Show your current config:
-
-
-```sh
-task show
-```
-
-Use machine-readable output to make a config file with all configuration keys shown, then make it your configuration file.
-
-```sh
-task _show > ${file}
-mv ${file} ~/.config/task/taskrc
-```
-

data/task/timew.md

@@ -1,172 +0,0 @@
----
-title: "timewarrior"
-tags: [ "data", "tracking", "time", "timew" ]
----
-# Summaries
-
-Try:
-
-```sh
-timew summary :yesterday
-```
-
-You can also use :week, :lastweek, :month, :quarter, :year, or a range such as:
-
-```sh
-timew summary today to tomorrow
-timew today - tomorrow
-2018-10-15T06:00 - 2018-10-17T06:00
-```
-
-Each of these can gain with the :ids tag.
-
-# Basics
-
-```sh
-timew start
-timew stop
-timew continue
-timew summary
-timew tags
-```
-
-And add ids with:
-
-```sh
-timew summary :ids
-timew track 10am - 1pm timewarrior
-timew track 1pm for 2h walk
-```
-
-# Adjusting Timewarrior
-
-First get ids.
-
-```sh
-timew summary :ids
-```
-
-Then if we're looking at task @2:
-
-```sh
-timew move @2 12:00
-timew lengthen @2 3mins
-```
-
-```sh
-time shorten @2 40mins
-```
-
-# Forgetting
-
-```sh
-timew start 1h ago @4
-```
-
-Or if your action actually had a break:
-
-```sh
-timew split @8
-```
-
-Or maybe not?
-
-```sh
-timew join @4 @8
-timew @8 delete
-```
-
-Start at previous time
-
-```sh
-timew start 3pm 'Read chapter 12'
-timew start 90mins ago 'Read chapter 12'
-```
-
-Cancel currently tracked time.
-
-```sh
-timew cancel
-```
-
-# Backdated tracking
-
-> timew untag @3
-
-
-# Hints
-
-* :quit - for automation
-
-* :yes
-
-* :color
-
-* :fill - expand the time to fill out available time
-
-* :adjust - automatically correct overlaps
-
-* :ids - show id numbers
-
-
-# Times
-
-* :yesterday
-
-* :day
-
-* :week
-
-* :month
-
-* :quarter
-
-* :lastweek
-
-* :lastmonth
-
-* :lastquarter
-
-* :lastyear
-
-
-
-# Mistakes
-
-task end.after:2015-05-01 and end.before:2015-05-31 completed
-
-task end.after:today-1wk completed
-
-# Errors with Python3
-
-Replace 
-
-> os.system('timew start ' + combined + ' :yes')
-
-with:
-
-> os.system('timew start ' + combined.decode() + ' :yes')
-
-and 
-
-> os.system('timew stop ' + combined + ' :yes')
-
-with:
-
-> os.system('timew stop ' + combined.decode() + ' :yes')
-
-# Fixing Errors
-
-```sh
-curl -O https://taskwarrior.org/download/timew-dbcorrection.py
-```
-
-```sh
-python timew-dbcorrections.py
-```
-
-# Setup
-
-With taskwarrior installed as well, `locate on-modify-time`, then add it to ~/.task/hooks and make it executable.
-This will track the time of any tasks used with [taskwarrior](task.md).
-

data/unison.md

@@ -1,6 +1,10 @@
 ---
-title: "unison"
-tags: [ "backups", "synch" ]
+title: unison
+tags: 
+- backups
+- synch
+requires: 
+- networking/ssh.md
 ---
 
 Install unison on both machines, and make sure both have the same version of unison, with the same version of the ocaml compiler (the smallest difference will cause problems).
@@ -14,7 +18,7 @@ Create the `~/.unison` directory on both machines.
 Make a job called `backup`:
 
 ```sh
-JOB=backup
+job=backup
 ```
 
 Here is an example job, which synchronizes the `~/music` directory with a remote machine which has the same username.
@@ -24,16 +28,16 @@ Here is an example job, which synchronizes the `~/music` directory with a remote
 echo "
 auto = true
 root=$HOME
-root=ssh://$USER@$IP_ADDRESS/$HOME
+root=ssh://${user}@${ip_address}/$HOME
 
 path=music
 
 ignore=Name *.flac
-" > ~/.unison/"$JOB".prf
+" > ~/.unison/"${job}".prf
 
 ```
 
-Remember to specify `$IP_ADDRESS`
+Remember to specify `${ip_address}`
 
 The last command means it will ignore any file with a name ending in `.flac`.
 
@@ -43,7 +47,7 @@ The first command means this will run but also confirm which files will be delet
 Or you can deleted that line in the `.prf` file and run it with a flag:
 
 ```sh
-unison -batch *backup*.prf
+unison -batch ${job}.prf
 ```
 
 Set unison to run with crontab or a systemd unit file to have directories synchronize automatically.

data/view_torrents.md

@@ -1,11 +1,14 @@
 ---
-title: "View Torrents"
-tags: [ "data", "transmission", "torrenting" ]
+title: View Torrents
+tags: 
+- data
+- transmission
+- torrenting
 ---
 
 
 ```sh
-transmission-show $file.torrent  | less
+transmission-show ${file}.torrent  | less
 ```
 
 `TRACKERS` shows where transmission will ask who has the torrent, but will probably be out of date.

data/w3m.md

@@ -1,10 +1,11 @@
 ---
-title: "w3m"
-tags: [ "browsers" ]
+title: w3m
+tags: 
+- browser
 ---
 Open a search tab:
 
-```bash
+```sh
 w3m ddg.gg
 ```
 

distros/android/ssh_to_phone.md

@@ -1,6 +1,9 @@
 ---
-title: "ssh to phone"
-tags: [ "networking", "ssh", "android" ]
+title: ssh to phone
+tags: 
+- networking
+- ssh
+- android
 ---
 
 1. Install fdroid on phone.

distros/arch/arch_pi_install.md

@@ -1,6 +1,9 @@
 ---
-title: "Arch on a Raspberry Pi 4"
-tags: [ "distros", "raspberry pi", "rpi" ]
+title: Arch on a Raspberry Pi 4
+tags: 
+- distros
+- raspberry pi
+- rpi
 ---
 
 The [Official Instructions](https://archlinuxarm.org/platforms/armv8/broadcom/raspberry-pi-4) for a Raspberry pi 4 do not allow for working sound from the headphone jack, unless you use the aarch64 Installation.

distros/arch/autologin.md

@@ -1,20 +1,21 @@
 ---
-title: "autologin"
-tags: [ "distros", "arch" ]
+title: autologin
+tags: 
+- distros
+- arch
 ---
 
 # Automatic Login
 
 Edit `/etc/systemd/system/getty@tty1.service.d/override.conf` by typing:
 
-```bash
+```sh
 sudo systemctl edit getty@tty1
 ```
 
 The put in the following, changing `[ USER ]` to your username.
 
 ```
-
 [Service]
 ExecStart=
 ExecStart=-/usr/bin/agetty --autologin [ USER ] -s %I 115200,38400,9600 vt102
@@ -25,9 +26,22 @@ ExecStart=-/usr/bin/agetty --autologin [ USER ] -s %I 115200,38400,9600 vt102
 
 In `.bashrc`.
 
-```
+```sh
  if [ -z "$DISPLAY" ] && [ "$(fgconsole)" -eq 1 ]; then
  exec startx
  fi
 
 ```
+
+# Faillock reset
+
+After failing 3 times to enter the password, archlinux would ussualy lock entering the password for 10 minutes, not all apps and guis display this message, so sometimes it can be a bit confusing. To reset this lockdown, you can login as root and restart it manually with command
+
+``` sh
+failock --reset
+
+```
+
+
+
+

distros/arch/basic_install.md

@@ -1,21 +1,23 @@
 ---
-title: "basic-install"
-tags: [ "arch" ]
-requires: [ "partitions", "time" ]
+title: Install Arch
+tags: 
+- arch
+requires: 
+- system/partitions.md
 ---
 Keyboard layout changed.
 
-```bash
+```sh
 ls /usr/share/kbd/keymaps/**/*.map.gz
 ```
 
-```bash
+```sh
 loadkeys uk.map.gz
 ```
 
 Check if boot mode is UEFI
 
-```bash
+```sh
 ls /sys/firmware/efi/efivars
 ```
 
@@ -23,115 +25,115 @@ Without efivars, the system must boot with BIOS.
 
 # Check network's up
 
-```bash
+```sh
 ping archlinux.org
 ```
 
 Set system clock properly
 
-```bash
+```sh
 timedatectl set-ntp true
 ```
 
 Check disks
 
-```bash
+```sh
 lsblk
 ```
 
 Make partition
 
-```bash
+```sh
 parted -s /dev/sda mklabel gpt
 ```
 
-```bash
+```sh
 parted -s /dev/sda mklabel msdos
 ```
 
-```bash
+```sh
 parted  -s /dev/sda mkpart primary ext4 512 100%
 ```
 
-```bash
+```sh
 parted -s /dev/sda set 1 boot on
 ```
 
-```bash
+```sh
 mkfs.ext4 /dev/sda1
 ```
 
 Use pacstrap to get the base install.
 
-```bash
+```sh
 mount /dev/sda1 /mnt/
 ```
 
-```bash
+```sh
 pacstrap /mnt base base-devel vim linux linux-firmware
 ```
 
 Make fstab notes for new system.
 
-```bash
+```sh
 genfstab -U /mnt >> /mnt/etc/fstab
 ```
 
-```bash
+```sh
 arch-chroot /mnt
 ```
 
-```bash
+```sh
 echo 'en_GB.UTF-8' > /etc/default/locale
 ```
 
-```bash
+```sh
 pacman -Sy networkmanager grub
 ```
 
 For legacy:
 
-```bash
+```sh
 grub-install --target=i386-pc /dev/sda
 ```
 
 For EFI:
 
-```bash
+```sh
 sudo pacman -S efibootmgr
 ```
 
-```bash
+```sh
 mkdir /boot/efi
 ```
 
-```bash
+```sh
 grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=GRUB --remmovable
 ```
 
-```bash
+```sh
 grub-mkconfig -o /boot/grub/grub.cfg
 ```
 
 set local time
 
-```bash
+```sh
 ln -sf /usr/share/zoneinfo/Europe/Belgrade /etc/localtime
 ```
 
 Find the desired locale's and uncomment them.
 
-```bash
+```sh
 vi /etc/locale.gen
 ```
 
-```bash
+```sh
 locale-gen
 ```
 
-Make your keyboard changes permenent with:
+Make your keyboard changes permanent with:
 
-```bash
+```sh
 vi /etc/vconsole.conf
 ```
 
@@ -140,13 +142,13 @@ unsure about this bit - is this name just for the loadkeys function?
 
 Make a hostname
 
-```bash
+```sh
 echo pc > /etc/hostname
 ```
 
 Set hostnames for network, or at least your own.
 
-```bash
+```sh
 vi /etc/hosts
 ```
 
@@ -160,27 +162,27 @@ If the system has a permanent IP address, it should be used instead of localhost
 
 Ping some sites to make sure the network's working
 
-```bash
+```sh
 passwd
 ```
 
-```bash
+```sh
 exit
 ```
 
-```bash
+```sh
 umount -R /mnt
 ```
 
 Remove that awful beep sound:
 
-```bash
+```sh
 rmmod pcspkr
 ```
 
 ...and make the change permanent:
 
-```bash
+```sh
 sudo echo "blacklist pcspkr" >> /etc/modprobe.d/nobeep.conf
 ```
 

distros/arch/fonts.md

@@ -1,6 +1,7 @@
 ---
-title: "fonts"
-tags: [ "distros" ]
+title: fonts
+tags: 
+- distros
 ---
 # Basics
 

distros/arch/gpu.md

@@ -1,6 +1,10 @@
 ---
-title: "Ach Linux GPU Setup"
-tags: [ "arch", "GPU" ]
+title: Arch Linux GPU Setup
+tags: 
+- arch
+- GPU
+requires:
+- distros/arch/install_yay.md
 ---
 # Step 1: Multilib
 
@@ -13,7 +17,7 @@ Include = /etc/pacman.d/mirrorlist
 
 And update:
 
-```bash
+```sh
 sudo pacman -Syu
 ```
 
@@ -21,7 +25,7 @@ sudo pacman -Syu
 
 Check your graphics card type:
 
-```bash
+```sh
 lspci  | grep VGA
 ```
 
@@ -31,7 +35,7 @@ lspci  | grep VGA
 
 If you see `Nvidia`, then install the intel drivers:
 
-```bash
+```sh
 sudo pacman -S --needed lib32-mesa vulkan-intel lib32-vulkan-intel vulkan-icd-loader lib32-vulkan-icd-loader
 ```
 
@@ -39,7 +43,7 @@ sudo pacman -S --needed lib32-mesa vulkan-intel lib32-vulkan-intel vulkan-icd-lo
 
 If you see `Intel`, then install the intel drivers:
 
-```bash
+```sh
 sudo pacman -S --needed lib32-mesa vulkan-intel lib32-vulkan-intel vulkan-icd-loader lib32-vulkan-icd-loader xf86-video-intel
 ```
 
@@ -47,16 +51,16 @@ sudo pacman -S --needed lib32-mesa vulkan-intel lib32-vulkan-intel vulkan-icd-lo
 
 If you see `AMD`, then check your card support `vulkan`:
 
-```bash
+```sh
 yay -S gpu-viewer
 ```
 
-```bash
+```sh
 vulkaninfo | grep 'VkPhysicalDeviceVulkanMemoryModelFeatures' -A 3
 ```
 
 You should see 'true' here.
 
-```bash
+```sh
 sudo pacman -S --needed lib32-mesa vulkan-radeon lib32-vulkan-radeon vulkan-icd-loader lib32-vulkan-icd-loader xf86-video-amdgpu
 ```

distros/arch/install_yay.md

@@ -0,0 +1,31 @@
+---
+title: Install yay
+tags: 
+- distros
+- arch
+requires: 
+- distros/arch/basic_install.md
+---
+
+```sh
+pacman --sync --noconfirm --needed base-devel gcc git
+git clone https://aur.archlinux.org/yay.git
+cd yay
+makepkg -si
+```
+
+The flags are mostly the same as in `pacman`.
+But running `yay` without flags will do the update like `yay -Syu` and with package name it will search packages in the AUR and `pacman` repos, and let you choose which to install.
+
+```sh
+yay ${search_term}
+``` 
+
+Building the package can usually take some time, and after the build it will ask for the `sudo` password.
+If you leave, the installation will fail.
+To avoid this, you can use the flag `--sudoloop` and enter the `sudo` password initially and it will loop it until the installation is finished.
+
+```sh 
+yay -S --noconfirm --sudoloop ${package_name}
+```
+

distros/arch/maintenance.md

@@ -1,33 +1,28 @@
 ---
-title: "Maintenance"
-tags: [ "arch" ]
+title: Arch Maintenance
+tags: 
+- arch
+requires: 
+- pacman
+- vim
 ---
 
 # Package Cache
 
 Clean the cache of old packages in `/var/cachepacman/pkg/`:
 
-```bash
+```sh
 ls /var/cache/pacman/pkg/ | wc -l
 sudo pacman -Sc
 ls /var/cache/pacman/pkg/ | wc -l
 ```
-And the same for `yay` (with `-Yc` to remove old dependencies):
-
-```bash
-ls ~/.cache/yay/ | wc -l
-yay -Sc
-yay -Yc
-ls ~/.cache/yay/ | wc -l
-```
-
 # New Configs
 
 If you chance a configuration file, such as `/etc/environment`, and `pacman` wants to update the file, it will place `/etc/environment.pacnew`.
 
 Check the new files, then look at the difference between the `pacman` version, and your version.
 
-```bash
+```sh
 sudo find /etc/ /var/ /usr/ -name "*.pacnew" 
 diff /etc/pacman.d/mirrorlist*
 ```
@@ -36,17 +31,14 @@ Either,
 
 - Update the files manually,
 
-```bash
+```sh
 sudo -e /etc/pacman.d/mirrorlist
 sudo rm /etc/pacman.d/mirrorlist.pacnew
 ```
 
-Or,
+Or use a tool like `pacdiff` to view the changes next to each other, and select them with `vim`.
 
-- use a tool like `pacdiff` to view the changes next to each other, and select them with `vim`.
-
-
-```bash
+```sh
 sudo pacman -S pacman-contrib
 sudo pacdiff
 ```

distros/arch/pacman.md

@@ -1,54 +1,65 @@
 ---
-title: "pacman"
-tags: [ "distros" ]
+title: pacman
+tags: 
+- distros
+requires: 
+- distros/arch/basic_install.md
 ---
 
 Packages are kept in /var/cache/pacman/pkg.
 
 Delete unused old packages with:
 
-```bash
+```sh
 sudo pacman -Sc
 ```
 
 Signatures are handled by the pacman-key, initially set up with:
 
-```bash
+```sh
 sudo pacman-key --populate archlinux
 ```
 
 And refreshed with:
 
+```sh 
 sudo pacman-key --refresh-keys
+ ```
 
 If you have usigned keys, you can refresh with:
 
-```bash
+```sh
 sudo pacman -Sc
 ```
 
 or 
 
-```bash
+```sh
 sudo pacman -Scc
 ```
 
 Reset all keys with:
 
-```bash
+```sh
 sudo rm -r /etc/pacmand.d/gnupg/ && sudo pacman-key --init
 ```
 
 If you're constantly getting 'everything corrupted, nothing upgraded', try running:
 
-```bash
+```sh
 sudo pacman -S archlinux-keyring
 ```
 
 List all orphaned packages:
 
-```bash
-sudo pacman -Qtdq
+```sh
+pacman -Qtdq
+```
+
+Removing a package:
+
+```sh
+sudo pacman -Rn <package_name>
 ```
 
 ## Cleaning Config Files
@@ -61,3 +72,4 @@ These changes must be merge manually.
 
 Install the `pacdiff` tool to make this easier, from the `pacman-contrib` package, then simply run `sudo pacdiff` to sort through the various mergers.
 
+

distros/arch/pacman_extras.md

@@ -0,0 +1,31 @@
+---
+title: pacman - Extras
+tags: 
+- distros
+requires: 
+- distros/arch/pacman.md
+---
+
+## Unattended Actions
+
+```sh
+pacman -Syu --noconfirm
+```
+
+## `pacman` and `yay` Text Colouring
+
+Getting the colors is done by editing the `/etc/pacman.conf` and uncommenting the line `Color`.
+
+By adding the line `ILoveCandy` you will unlock some terminal animations, like pacman eating dots while installing some package.
+
+## Timid Installations
+
+Want to try out software, but not sure if you want to keep it?
+You can tell `pacman` that this is a dependency for another package:
+
+
+```sh
+pacman -S --noconfirm --asdeps ${weird_music_player}
+```
+
+When you [remove orphaned packages](pacman.md), the package will be automatically uninstalled.

distros/arch/yay_maintenance.md

@@ -0,0 +1,25 @@
+---
+title: Arch maintenance with yay
+tags: 
+- arch
+- maintenance
+requires: 
+- distros/arch/maintenance.md
+---
+
+# Package Cache
+
+Just like `[pacman](distros/arch/pacman.md)` with a couple of extras.
+
+```sh
+ls ~/.cache/yay/ | wc -l
+yay -Sc
+```
+
+Use `-Yc` to remove old dependencies:
+
+```sh
+yay -Yc
+ls ~/.cache/yay/ | wc -l
+```
+

distros/debian/apt.md

@@ -1,15 +1,13 @@
 ---
-title: "apt"
-tags: [ "distros" ]
+title: apt troubleshooting
+tags: 
+- debian
 ---
-## apt
-
-### Configurations?
 
 Messed up a package's configuration files?
 
 ```sh
-sudo apt-get purge [thing]
+sudo apt-get purge ${package}
 ```
 
 ```sh
@@ -19,16 +17,16 @@ sudo apt autoremove
 Check if you still have related things:
 
 ```sh
-apt search [thing]
+apt search ${package}
 ```
 
 ```sh
-sudo apt-get install [ thing ]
+sudo apt-get install ${package}
 ```
 
 Still have problems?
 
 ```sh
-sudo dpgk --force-confmiss -i /var/cache/apt/archives/[thing]
+sudo dpgk --force-confmiss -i /var/cache/apt/archives/${package}
 ```
 

distros/void/aeroplanes.md

@@ -1,7 +1,9 @@
 ---
-title: "Aeroplane Mode in Void"
-tags: [ "void" ]
+title: Aeroplane Mode in Void
+tags: 
+- void
 ---
+
 Put your device in 'aeroplane' mode (e.g. where no trace of signal leaves it) by turning off Wi-Fi and blue-tooth.
 
 ```sh

distros/void/autologin.md

@@ -1,34 +1,54 @@
 ---
-title: "Void Autologin"
-tags: [ "void" ]
+title: Void Autologin
+tags: 
+- void
+- autologin
 ---
 
-Make the autologin service:
-
-```bash
-cp -R /etc/sv/agetty-tty1 /etc/sv/agetty-autologin-tty1
-```
+The virtual terminals are run as services.
+Make a new service by making symbolic links to the generic one.
 
 ```sh
+login=agetty-autologin
+sudo cp -rs /etc/sv/agetty-generic/ /etc/sv/${login}/
+
+```
+
+Copy the configuration file for the `agetty-tty1` service, and add the `--autologin` argument.
+
+```sh
+sed "s/--noclear/--autologin ${USER} &/" /etc/sv/agetty-tty1/conf | sudo tee /etc/sv/${login}/conf
+
+```
+
+It should look like this:
+
+
+```
 if [ -x /sbin/agetty -o -x /bin/agetty ]; then
-        # util-linux specific settings
-        if [ "${tty}" = "tty1" ]; then
-                GETTY_ARGS="--noclear"
-        fi  
+	# util-linux specific settings
+	if [ "${tty}" = "tty1" ]; then
+		GETTY_ARGS="--autologin ${your_username} --noclear"
+	fi
 fi
-
-GETTY_ARGS="--autologin [ your username ] --noclear"
-BAUD_RATE=38400
-TERM_NAME=linux
-
 ```
 
-Then stick this at the end of the bashrc:
+If you see the actual variable `${USER}` then you probably used the wrong quotes.
+
+Disable the `tty1` service (because the login takes its place).
+
 
 ```sh
-# autologin on tty1
- if [ -z "$DISPLAY" ] && [ "$(fgconsole)" -eq 1 ]; then
- exec startx
- fi
-
+sudo touch /etc/sv/agetty-tty1/down
 ```
+
+Enable your `${login}` service:
+
+
+```sh
+sudo ln -s /etc/sv/${login} /var/service/
+```
+
+Reboot.
+
+Pizza party for one.

distros/void/brand_name_wallpaper.md

@@ -1,30 +1,31 @@
 ---
-title: "Brand Name Wallpaper"
-tags: [ "void" ]
+title: Brand Name Wallpaper
+tags: 
+- void
 ---
 
 To automatically stick the logo onto your background, do these commands in the directory.
 
 Get the void linux logo from wikipedia
 
-```bash
+```sh
 wget https://upload.wikimedia.org/wikipedia/commons/thumb/0/02/Void_Linux_logo.svg/256px-Void_Linux_logo.svg.png?20170131170632
 ```
 
 Rename it, and resize it (the standard size is too small for most wallpapers)
 
-```bash
+```sh
 convert -resize 200% '256px-Void_Linux_logo.svg.png?20170131170632' void-logo.png
 ```
 Download a pretty wallpaper
 
-```bash
+```sh
 wget http://wallpapercave.com/wp/Wlm9Gv0.jpg
 ```
 
 Put the void logo on all *jpg and *png images
 
-```bash
+```sh
 for x in *.jpg
 	do
 	composite -compose multiply -gravity Center void-logo.png "$x" "$x"

distros/void/extrace.md

@@ -1,6 +1,7 @@
 ---
-title: "extrace"
-tags: [ "void" ]
+title: extrace
+tags: 
+- void
 ---
 Monitor all processes:
 

distros/void/jenkins.md

@@ -1,6 +1,8 @@
 ---
-title: "jenkins"
-tags: [ "void", "build" ]
+title: jenkins
+tags: 
+- void
+- build
 ---
 # Jenkins on Void
 

distros/void/laptops.md

@@ -0,0 +1,10 @@
+---
+title: Laptops with Void Linux
+tags: 
+- void
+- laptop
+---
+
+Install and enable `tlp`.
+
+Decide how to handle events like the lid closing in `/etc/acpi/handler.sh`.

distros/void/locale.md

@@ -1,6 +1,8 @@
 ---
-title: "Void locale"
-tags: [ "void", "locale" ]
+title: Void locale
+tags: 
+- void
+- locale
 ---
 
 Check the current locales:

distros/void/sv.md

@@ -1,18 +1,19 @@
 ---
-title: "sv"
-tags: [ "void" ]
+title: sv
+tags: 
+- void
 ---
 # List Services
 
 All possible services are in:
 
-```bash
+```sh
 ls /etc/sv
 ```
 
 The computer only uses those in /var/service, so symbolic links are made to start and stop services.
 
-```bash
+```sh
 ls /var/service
 ```
 
@@ -20,13 +21,13 @@ ls /var/service
 
 Enable the sshd service, so that ssh will work every time you boot up:
 
-```bash
+```sh
 sudo ln -s /etc/sv/sshd /var/service
 ```
 
 Then start the service:
 
-```bash
+```sh
 sudo sv start sshd
 ```
 
@@ -34,19 +35,19 @@ sudo sv start sshd
 
 Stop `mpd` with:
 
-```bash
+```sh
 sudo sv stop mpd
 ```
 
 And stop it automatically loading at startup with:
 
-```bash
+```sh
 sudo rm /var/service/mpd
 ```
 
 You can also just make a file called 'down':
 
-```bash
+```sh
 sudo touch /var/service/mpd/down
 ```
 
@@ -63,7 +64,7 @@ If unsure, use `#!/bin/bash` as the first line.  When Void Linux says `sh`, it m
 
 Confirm the shell you'll use:
 
-```bash
+```sh
 ls -l $(which sh)
 ```
 

distros/void/void_basics.md

@@ -1,12 +1,13 @@
 ---
-title: "Void Linux Basics"
-tags: [ "void" ]
+title: Void Linux Basics
+tags: 
+- void
 ---
 # Updates
 
 Update all packages with
 
-```bash
+```sh
 sudo xbps-install -Su
 ```
 
@@ -17,7 +18,7 @@ See [xbps](xbps.md) for more.
 Void keeps *every* version of everything you install, so you can roll back to them.
 Remove old packages with:
 
-```bash
+```sh
 sudo xbps-remove -O
 ```
 
@@ -25,19 +26,19 @@ sudo xbps-remove -O
 
 Old Void kernels are left on the boot partition.  List them with:
 
-```bash
+```sh
 vkpurge list
 ```
 
 Remove one with:
 
-```bash
+```sh
 vkpurge 2.8.2_4
 ```
 
 Remove all but the latest with:
 
-```bash
+```sh
 vkpurge rm all
 ```
 
@@ -48,14 +49,13 @@ You can change this number to change the screen brightness.
 
 For an easy utility, install `brightnessctl`.
 
-```bash
+```sh
 brightnessctl s 10%-
 brightnessctl s 10%+
 ```
 
-# Other Tricks
+# Related
 
-- [autologin](autologin.md)
-- [services](sv.md)
-- [wifi](../../networking/wpa_supplicant.md)
+- [autologin](distros/void/autologin.md)
+- [services](distros/void/sv.md)
 

distros/void/xbps.md

@@ -1,55 +1,62 @@
 ---
-title: "xbps"
-tags: [ "void" ]
+title: xbps
+tags: 
+- void
 ---
 ## Search
 
 Look for cowsay in the repository:
 
-```bash
+```sh
 xbps-query --repository --search cowsay
 ```
 
 Short version:
 
-```bash
+```sh
 xbps-query -Rs cowsay
 ```
 
 Search with regex:
 
-```bash
+```sh
 xbps-query --regex -Rs 'cow(s)?\w'
 ```
 
+Search for `genfstab`:
+
+```sh
+xlocate genfstab
+```
+
 List what's required for cowsay
 
-```bash
+```sh
 xbps-query -x cowsay
 ```
 
 What packages are orphaned (i.e. installed as a dependency for another package, which has since been removed)?
 
-```bash
+```sh
 xbps-query -O
 ```
 
 Show cowsay's dependencies.
 
-```bash
+```sh
 xbps-query -x cowsay
 ```
 
 This shows `perl`.
 To see what else depends on perl:
 
-```bash
+```sh
 xbps-query -X perl
 ```
 
 List all manually installed software.
 
-```bash
+```sh
 xbps-query -m
 ```
 
@@ -57,14 +64,14 @@ xbps-query -m
 
 Install cowsay
 
-```bash
+```sh
 xbps-install cowsay
 ```
 
 Upgrade current packages.
 `-R` looks at repositories, `-s` makes a sloppy search (for rough matches).
 
-```bash
+```sh
 xbps-install -Suv
 ```
 
@@ -72,19 +79,19 @@ xbps-install -Suv
 
 Remove cowsay
 
-```bash
+```sh
 xbps-remove cowsay
 ```
 
 ...and all dependencies
 
-```bash
+```sh
 xbps-remove -R cowsay
 ```
 
 Remove all orphaned dependencies.
 
-```bash
+```sh
 xbps-remove -o
 ```
 
@@ -94,19 +101,19 @@ Show information about cowsay
 
 Reinstall cowsay
 
-```bash
+```sh
 xbps-install -f cowsay
 ```
 
 Look for broken packages.
 
-```bash
+```sh
 sudo xbps-pkgdb -a
 ```
 
 And if you've found any, you might reconfigure all packages forcefully:
 
-```bash
+```sh
 sudo xbps-reconfigure -af
 ```
 

example.rec

@@ -0,0 +1,155 @@
+%rec: example
+%key: filename
+%type: note line
+
+filename: default.service
+bin: systemd
+usage: mv {{filename}} /usr/lib/systemd/system/
++ systemctl daemon-reload
++ systemctl enable --now {{filename}}
+note: Basic systemd service file
+content: [Unit]
++ 
++ Description={{script}}
++ 
++ [Service]
++ 
++ ExecStart=/home/{{user}}/.local/bin/{{script}}.sh
++ 
++ Restart=always
++ 
++ Type=simple
++ 
++ User={{user}}
++ 
++ Group={{group}}
++ 
++ [Install]
++ 
++ WantedBy=multi-user.target
++ 
++ Alias=test.service
++ 
+
+filename: food.sc
+bin: sc-im
+usage: {{bin}} {{filename}}
+note: Basic sc-im example of adding and averaging
+content: # This data file was generated by the Spreadsheet Calculator Improvised (sc-im)
++ # You almost certainly shouldn't edit it.
++ 
++ newsheet "Food"
++ movetosheet "Food"
++ offscr_sc_cols 0
++ offscr_sc_rows 0
++ nb_frozen_rows 1
++ nb_frozen_cols 0
++ nb_frozen_screenrows 2
++ nb_frozen_screencols 0
++ format A 24 1 0
++ format B 13 2 0
++ format 0 2
++ format 4 2
++ format 10 2
++ freeze 0
++ label A0 = "Food by Weight"
++ leftstring B0 = "No. Meals"
++ leftstring A1 = "Ajvar"
++ let A1 = 5
++ let B1 = A1*$A$10
++ leftstring A2 = "Apples"
++ let A2 = 3
++ let B2 = A2*$A$10
++ leftstring A3 = "Rocket"
++ let A3 = 0.2
++ let B3 = A3*$A$10
++ leftstring A4 = "Beli Cheese"
++ let A4 = 1
++ let B4 = A4*$A$10
++ leftstring A6 = "Total"
++ let A6 = @sum(A1:A4)
++ leftstring B6 = "Total"
++ let B6 = @sum(B1:B4)
++ leftstring A7 = "Average"
++ let A7 = @avg(A1:A4)
++ leftstring A10 = "Weight of Meal"
++ let A10 = 0.3
++ pad 4 A0:A4
++ pad 2 B0:B4
++ pad 4 A6:A8
++ pad 2 B6
++ pad 4 A10
++ goto A10
+
+filename: lowdown.mk
+bin: make
+usage: {{bin}} -f {{filename}} example
+content: output: all
++ 
++ .PHONY: example
++ example: html/foot.html html/head.html
++ 	mkdir -p articles/
++ 	fortune > articles/fort_1.md
++ 	fortune > articles/fort_2.md
++ 
++ HTML = $(patsubst articles/%.md,public/%.html,$(wildcard articles/*.md))
++ 
++ $(HTML): public/ articles/ $(wildcard html/*)
++ 
++ html/head.html:
++ 	@mkdir $(@D)
++ 	echo '<head> Something about CSS probably </head>' > $@
++ 	echo '<body>' >> $@
++ 
++ html/foot.html: html/head.html
++ 	echo '</body>' >> $@
++ 
++ public/%.html : articles/%.md
++ 	cat html/head.html > $@
++ 	lowdown $< >> $@
++ 	cat html/foot.html >> $@
++ 
++ .PHONY: all
++ all : $(HTML)
++ 
++ articles/:
++ 	mkdir $@
++ 
++ public/:
++ 	mkdir $@
++ 
++ clean :
++ 	rm -rf public html
+
+filename: Makefile
+bin: make
+usage: make
+content: ### Variables
++ 
++ PAGER ?= $(shell command -v mdless bat less | head -1 )
++ EDITOR ?= vi
++ 
++ requirements += lowdown
++ 
++ ### Dependencies
++ 
++ out: help
++ 
++ ### Patterns
++ 
++ 
++ ### Phonies
++ 
++ .PHONY: help
++ help:
++ 	@awk 'BEGIN {FS = ":.*?## "} /^[0-9a-zA-Z._-]+:.*?## / {printf "\033[36m%s\033[0m : %s\n", $$1, $$2}' $(MAKEFILE_LIST) | \
++ 		sort | \
++ 		column -s ':' -t
++ 
++ .PHONY: check
++ check: ## Check you have the required dependencies
++ 	@$(foreach dep, $(requirements), type $(dep) >/dev/null || echo "Install $(dep)." ; )
++ 
++ .PHONY: clean
++ clean: ## Remove generated files.
++ 	$(RM) $(defaults)

hardware/brightness.md

@@ -1,6 +1,8 @@
 ---
-title: "brightness"
-tags: [ "hardware", "laptop" ]
+title: brightness
+tags: 
+- hardware
+- laptop
 ---
 # Brightness
 

hardware/keyboard.md

@@ -1,6 +1,8 @@
 ---
-title: "keyboard"
-tags: [ "keyboard", "vim" ]
+title: keyboard
+tags: 
+- keyboard
+- vim
 ---
 
 # System-Wide Capslock and Escape Swap

hardware/monitor.md

@@ -1,6 +1,7 @@
 ---
-title: "monitor"
-tags: [ "hardware" ]
+title: monitor
+tags: 
+- hardware
 ---
 See screen size
 

hardware/printers.md

@@ -1,10 +1,12 @@
 ---
-title: "printers"
-tags: [ "hardware" ]
+title: printers
+tags: 
+- hardware
 ---
+
 # Cups: The Common Unix Printing System
 
-Configure cups at /etc/cups/supsd.conf, or visit the local webpage at http://localhost:631 if you want to use the Apple interface, otherwise, it's the printing daemon.
+Configure cups at `/etc/cups/supsd.conf`, or visit the local webpage at http://localhost:631 if you want to use the Apple interface, otherwise, it's the printing daemon.
 
 # The Printing Daemon
 

lists.fmt

@@ -0,0 +1,8 @@
+
+{{aim}}
+
+```{{shell}}
+{{cmd}}
+```
+
+{{note}}

networking/agate.md

@@ -1,6 +1,11 @@
 ---
-title: "Agate on Arch Linux"
-tags: [ "networking", "arch", "gemini" ]
+title: Agate on Arch Linux
+tags: 
+- networking
+- arch
+- gemini
+requires:
+- distros/arch/install_yay.md
 ---
 
 Docs are [here](https://github.com/mbrubeck/agate).
@@ -51,7 +56,7 @@ agate --content $GEMDIR --certs $GEMDIR/.certs \
 
 Once that works, it's time to make a service file; select any name for it:
 
-`SVFILE=st`
+`${svfile}=st`
 
 ```
 echo "
@@ -60,27 +65,27 @@ CERT=--certs $GEMDIR/.certs
 ADDR=--addr [::]:1965 --addr 0.0.0.0:1965
 HOSTNAME=--hostname $DOMAIN1 --hostname $DOMAIN2
 LANG=--lang $LANG
-" > $SVFILE.conf
+" > ${svfile}.conf
 ```
 
 Check the service file has all those variables and looks right:
 
-`cat $SVFILE.conf`
+`cat ${svfile}.conf`
 
 Now move it into the agate config directory:
 
-`mv $SVFILE.conf /etc/agate/`
+`mv ${svfile}.conf /etc/agate/`
 
 And finally, start the service:
 
 ```
 systemctl daemon-reload
-systemctl enable --now agate@$SVFILE.conf
+systemctl enable --now agate@${svfile}.conf
 ```
 
 Your Gemini capsule should be available, and you should be able to see any access in the logs:
 
 ```
-journalctl -xeu agate@$SVFILE.conf
+journalctl -xeu agate@${svfile}.conf
 ```
 

networking/bad_horse.md

@@ -1,6 +1,9 @@
 ---
-title: "Mapping the Net"
-tags: [ "networking", "graph", "fun" ]
+title: Mapping the Net
+tags: 
+- networking
+- graph
+- fun
 ---
 
 Find the path to a domain: