url-extract, just a simple script to check if url is redirecting to another or not! it supports proxy authentication too. You can use it to extracting shorten urls.

url-extract.rb

#!/usr/bin/env ruby

require 'net/http'
require 'uri'


def fetch(uri_str, limit = 10)
  
  #==[ Proxy settings ]==#
  proxy_host = "127.0.0.1" 
  proxy_port = 8000
  proxy_user = "" 
  proxy_pass = "" 

  raise ArgumentError, 'too many HTTP redirects' if limit == 0
  response = Net::HTTP::Proxy(proxy_host, proxy_port, proxy_user, proxy_pass).get_response(URI(uri_str))

  case response
  when Net::HTTPSuccess then
    warn "[-] #{uri_str} No redirection."
  when Net::HTTPRedirection then
    location = response['location']
    warn "[+] #{uri_str}\n |---> #{location}\n"
  else
    response.value
  end
end

fetch('http://t.co/axj2ak7tSC')  # Twitter shorten to google shorten 2 level redirect
fetch("http://goo.gl/uYHy4")
fetch("http://alturl.com/phy9e")
fetch("http://tiny.cc/wseeuw")
fetch("http://king-sabri.net")


### Todo ,, support muti redirection levels