lfs - Logic File System, the filesystem of discriminating hackers.
So funny! Check this out:
ls '/lfs/ext:c|ext:h/date:*--*--2008/.ext/'
mplayer -z '/lfs/ext:mp3/genre:Disco|genre:Electro/year:<70/.ext/'*.mp3
firefox 'http://aryx.kicks-ass.org/~pad/lfs_view.query/ext:pdf/.ext/'
Want have.