Ever been faced with a collection of files that need renaming and nearly gone mad from trying to do it manually? Lots of typing mv, or lots of right click -> rename. Enter qmv, part of renameutils. Suppose we have a bunch of mp3s that require renaming:

$ ls<br />
track10.mp3  track12.mp3  track2.mp3  track4.mp3  track6.mp3  track8.mp3<br />
track11.mp3  track1.mp3   track3.mp3  track5.mp3  track7.mp3  track9.mp3