ystk_yrk.rb

#!/usr/bin/env ruby

require 'twitter'

client = Twitter::REST::Client.new do |config|
  config.consumer_key        = ""
  config.consumer_secret     = ""
  config.access_token        = ""
  config.access_token_secret = ""
end

tweet = {}

while true do
  tweet[:new] = client.user_timeline("ystk_yrk").first.text
  if tweet[:old] != tweet[:new] and not tweet[:old].nil?
    puts "ゆりこ、オレだよ"
  end
  tweet[:old] = tweet[:new]
  sleep 60
end