http://qs321.pair.com?node_id=1209349


in reply to Clean Up Empty Directories

I usually just run 
find -type d -empty -exec rmdir {} +

[download]
several times until there's no empty directory.

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

[download]

In Section Cool Uses for Perl