ping.rb

#!/usr/bin/env ruby
require 'net/http'
require 'uri'

i = 0

while true
  begin
    i += 1
    puts "#{Time.now}: Pinging #{i}"
    Net::HTTP.get(URI('http://izumi.plan99.net/reload.html'))
    puts " => OK"
    sleep 10
  rescue SystemCallError, IOError, SocketError, Timeout::Error => e
    puts " => Error: #{e}"
  end
end