edmv

Batch file renaming with your favourite $EDITOR.

$ ls
0601%20Introduction.mp4 
0602%20Generic%20birthday%20attack.mp4 
0603%20The%20Merkle-Damgard%20Paradigm.mp4 
0604%20Constructing%20compression%20functions.mp4 
$ edmv *
qqxlr.]uu0jq3@q:wq
$ ls
6.1 Introduction.mp4
6.2 Generic birthday attack.mp4
6.3 The Merkle-Damgard Paradigm.mp4
6.4 Constructing compression functions.mp4