From 865b4a2da17e4e43f58370b511347d17f8e35e5b Mon Sep 17 00:00:00 2001
From: Malin Freeborn <malinfreeborn@posteo.net>
Date: Fri, 22 Aug 2025 16:02:19 +0200
Subject: [PATCH] remove duplicate entry

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 basics/cron.md | 129 -------------------------------------------------
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----
-title: "cron"
-tags: [ "basics", "time" ]
----
-# Cronie
-
-The `cronie` program is also known as `crond`.
-
-## Install
-
-```sh
-sudo apt search -n ^cron
-```
-
-Once installed, search for the service name, and start it.
-
-```sh
-sudo systemctl list-unit-files | grep cron
-sudo systemctl enable --now $NAME
-```
-
-## Usage
-
-Show your current crontab:
-
-```sh
-crontab -l
-```
-
-You can put this in a file and edit it:
-
-```sh
-crontab -l > $filename
-echo '39 3 */3 * * /bin/tar czf /tmp/etc_backup.tgz /etc/' >> $filename
-```
-
-Then apply that crontab:
-
-```sh
-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:
-
-
-```sh
-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:
-
-
-```sh
-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:
-
-```sh
-ls -d /etc/cron.*
-```
-
-Make a script which runs daily:
-
-```sh
-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.
-
-```sh
-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`.
-