system('locate -i '+ARGV[0]+' >/locate.0');
iter=""
no=0
ARGV.each {
   |iter|
   system('grep -i </locate.'+no.to_s+' '+iter+' >/locate.'+(1-no).to_s);
   no=1-no
   }
system('grep </locate.'+no.to_s+' .mp3$ >/locate.tmp.m3u');
# system('dcop amarok playlist addMedia /locate.tmp.m3u');
system('xmms /locate.tmp.m3u');

Gets an mp3 player to play mp3s which contain all the phrases given as arguments. Locate is much faster than xmms' library, usually in split a second.
This is very handy, when you install a command-line into the wm panel.
Creates files /locate.0, /locate.1, /locate.tmp.m3u.
Not reentrant.

Locate and play mp3 files with given pattern in path

database

Ruby