Find an installed Ruby Gem contents folder

 #!/usr/bin/env ruby  

 def find_path gem_name  

   `gem list #{gem_name}` =~ /(.*)\s\((.*)\)/  

   version = $2.split(",")[0]  

   "#{Gem.default_dir}/gems/#{gem_name}-#{version}"  

 end  

 puts find_path ARGV[0]