a simple snippets for traversing all sub directories

directory_traversal.rb

# usage:
#
# dir_traversal do 
#   the_code_want_to_run_in_each_directory
# end

def self.dir_traversal
  Dir.glob("*").each do |name|
    if File.directory?(name)
      Dir.chdir(name)
      dir_traversal { yield }
    end
  end
  yield
  Dir.chdir("..")    
end