$ wget -S --spider localhost/echo.php
Spider mode enabled. Check if remote file exists.
--2011-11-20 23:25:29--  http://localhost/echo.php
Resolving localhost... ::1, 127.0.0.1
Connecting to localhost|::1|:80... connected.
HTTP request sent, awaiting response...
  HTTP/1.1 200 OK
  Date: Sun, 20 Nov 2011 19:25:29 GMT
  Server: Apache/2.2.16 (Ubuntu)
  X-Powered-By: PHP/5.3.3-1ubuntu9.6
  Vary: Accept-Encoding
  Keep-Alive: timeout=15, max=100
  Connection: Keep-Alive
  Content-Type: text/html
Length: unspecified [text/html]
Remote file exists and could contain further links,
but recursion is disabled -- not retrieving.