batch conversion of files to lower case

[Nikolas Britton]

Posting this here so I can find it next time I need. Converts files in a 
directory to lower-case, change "*.TTF" to whatever you want to find / 
change:

find ./ -name "*.TTF" -exec perl -e 'rename($_, lc) || warn "$_: $!\n" 
for @ARGV' {} \;

Alternatively you can use "find ./ -type f" to change ALL files in the 
current working directory.

Adapted from Robin's post on this page: 
http://perlmonks.thepen.com/131861.html