From: eden li <eden.li@...>
Date: 2006-10-11T01:10:11+09:00
Subject: Re: (NEWBIE) Reading folders from a directory into an array

Dir['/path/*'].select { |f| File.directory? f }.each do |directory|
  # do your thing
end

Read more at http://www.rubycentral.com/book/ref_c_dir.html