====== Récupérer header serveur WEB ======


  sudo apt-get install libwww-perl

  $ GET -de underground54.serveurperso.com
  Connection: close
  Date: Sat, 03 Sep 2005 00:52:55 GMT
  '''Server: Apache/1.3.33 (Win32) PHP/5.0.3'''
  Content-Type: text/html
  Client-Date: Sat, 03 Sep 2005 22:46:40 GMT
  Client-Peer: 82.236.15.246:80
  Client-Response-Num: 1
  Client-Transfer-Encoding: chunked
  '''X-Powered-By: PHP/5.0.3'''