find rails unused images

# It requires ACK - http://betterthangrep.com/
task :find_unused_images do
  images = Dir.glob('app/assets/images/**/*')

  images_to_delete = []
  images.each do |image|
    unless File.directory?(image)
      # print "\nChecking #{image}..."
      print '.'
      result = `/Users/stereodenis/bin/ack -1 --type-set=mytype=.rb,.css,.scss,.haml,.coffee,.js,.erb,.en,.th,.html,.slim,.less,.sass #{File.basename(image)}`
      if result.empty?
        images_to_delete << image
      else
      end
    end
  end
  puts "\n\nDelete unused files running the command below:"
  puts "#{images_to_delete.join(" \n")}\n\n"
  puts "-----------------------------------"
  puts "rm #{images_to_delete.join(" ")}"
end