• add an additional IP to an interface
  

  ip addr add 10.1.1.2/24 dev eth0 label eth0:1

• cut a mp3-file
  

  mp3splt input.mp3 min.sec min.sec

<note important>If the time exceed 60 minutes you have to continue counting (e.g. 71.01).</note>

• transcode mp3-file to lower quality
  

  lame -m m -q0 -b40 ./input.mp3 ./output.mp3