Works with SW Notifier(http://saikyoline.jp/air/swn/).

sw.rb

# encoding: utf-8

require 'socket'

module Kernel
  def sw(*args)
    args.each do |arg|
      TCPSocket.open('localhost', 12345) {|s| s.write arg }
    end
  end

  def sw_r(*args)
    sw *(args.map {|a| "R:#{a}" })
  end

  def sw_y(*args)
    sw *(args.map {|a| "Y:#{a}" })
  end

  def sw_g(*args)
    sw *(args.map {|a| "G:#{a}" })
  end
end