Show all links on a page

all_links.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'hpricot'
require 'open-uri'

def green(string)
  "\033[0;32m#{string}\033[1;37m"
end

if !ARGV[0].nil?
  links = Hpricot(open(ARGV[0])).search('a[@href]').map { |e| e['href'].to_s }

  puts "###############################"
  puts "URL: #{green ARGV[0]}"
  puts "Link count: #{green links.count}"
  puts "###############################"
  puts links.join("\n")
end