Web server checker

#!/usr/bin/env ruby

# send request on website every 10 seconds
# checks request time and show growl notify and tell you by `say` if response time is more then 2 seconds


require 'rubygems'
require 'httparty'
require 'growl'

include Growl

while true
  t = Time.now.to_f
  r = HTTParty.get 'http://example.com/'
  dt = Time.now.to_f - t

  if dt > 2 || r.parsed_response.size < 300
    `say -v Kathy 'server is under attack'`
    `growlnotify -s -m "server is under attack"`
  end
  puts sprintf "%3.3f",  Time.now.to_f - t
  sleep 10
end