initial commit

system/compression.md

@@ -0,0 +1,45 @@
+# Tar
+
+## Basics
+
+* --create -c
+
+* --list -t
+
+* --extract --get -x
+
+* --file=file -f file
+
+
+
+
+Look in tar file:
+
+> tar -tf filename.tar.gz
+
+Look in detail:
+
+> tar -tvf filename.tar.gz
+
+# Zip
+
+Zip file:
+
+> zip name.zip file
+
+Zip directory:
+
+> zip -r name.zip dir
+
+Update existing entries.
+
+> zip -ru name.zip dir file1 file2
+
+Delete file from the zipfile.
+
+> zip -d name.zip dfile
+
+# 7z for .img.xz
+
+> 7z x file.img.xz
+