A script for resizing retina images for regular screens

gistfile1.rb

#! /usr/bin/env ruby
require 'RMagick'

def resize_image (image_path, write_path)
	image = Magick::Image.read(image_path).first
  	new_image = image.scale(0.5)
  	puts "Writing image #{write_path}..."
  	new_image.write(write_path) 
end

directory_path = ARGV[0]
dir_contents = Dir.entries(directory_path)

dir_contents.each do |f| 
	next if f.include?("@2x") == false
	puts "Resizing #{f}..."
 	new_name = f.sub("@2x", "")
 	image_path = "#{directory_path}#{f}"
 	write_path = "#{directory_path}#{new_name}"
 	resize_image(image_path, write_path)
end

puts "Done!"