#!/usr/bin/ruby
require 'open-uri'
require 'cgi'
url = CGI::escape(ARGV[0])

open( "http://validator.w3.org/check?uri=#{ url }" ) { |html|
    text = html.read
        text.scan /<h2.*?>(.+?)<\/h2>/m do |url|
            puts url
        end
}