This is an old revision of the document!
the place for useful commands, 1-liners and snippets
please leave a short description or some links here
create tar.gz archiv
tar -czvf myfiles.tar.gz /home/username/myfiles/
backup mirror.tar via ssh & cat
the file-globbing regex /[a-oq-z]* leaves out /p* dirs, to exclude /proc
ssh -v root@hostname tar cvf - /[a-oq-z]* | cat > /backupdir/mirror.tar
mp3 “normalize” by id3 tag
mp3gain analyses sound files and saves an id3 volume metatag to them. many music-players can read that id3 tag and adjust the volume to that gain.
find /path/to/music/ -type f -iname '*.mp3' -print0 | xargs -0 mp3gain -r -k