#!/usr/bin/env ruby

require 'csv'

# get paths
src_path, dst_path = ARGV

File.open(dst_path, 'wb') do |dst_file|
  CSV(dst_file) do |dst|
    File.open(src_path, 'rb') do |src_file|
      CSV(src_file) do |src|
        src.each do |row|
          dst << row + (%w{foo} * 2)
        end
      end
    end
  end
end