Combine and compress (or decompress) multiple file.
Compress a directory/file(s) with: tar -zcvf tarName.tar.gz file1orDir file2...
View the content of a tar.gz file with: tar -ztvf tarName.tar.gz.
Extract the content with: tar -xzvf file.tar.gz
Extract and specify a dir with -C: tar -xzvf my.tar.gz -C /home/backups/
Display information about the key type.
Control the volume with command or with tui (alsamixer).
ex:
// reduce volume
$ amixer -c 1 sset PCM 5%-
// up volume
$ amixer -c 1 sset PCM 5%+
Control media from command line.
playerctl previous, playerctrl next, playerctl –player=spotify play-pause
Backup https://doc.ubuntu-fr.org/timeshift