Lorens - Alfred extension problem

lorens.rb

#!/usr/bin/env ruby
require "lorem"
hash = {'c' => 'chars', 'w' => 'words', 'p' => 'paragraphs'}
args = ARGV[0].split
*args = hash[args[1]], args[0].to_i

print Lorem::Base.new(*args).output

script

# works in normal mode but not with silent mode
cd ~/Library/Application\ Support/Alfred/extensions/scripts/Lorens

ruby lorens.rb {query} | pbcopy

echo "Lipsum text is now ready in the clipboard"

exit # added to exit terminal