Ruby image file duplicator

dup.rb

require 'fileutils'

glob_path = File.join(
  Rails.application.config.retail_plus_images_path,
  '*.{jpg,jpeg,png,gif}'
)

Dir.glob(glob_path).each do |src|
  basename = File.basename(src, '.*')
  dest = src.gsub(basename, basename + '_2')
  FileUtils.cp(src, dest)
end