404 Not Found

Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ Arnold's Laws of Documentation:         \
|                                         |
| (1) If it should exist, it doesn't.     |
|                                         |
| (2) If it does exist, it's out of date. |
|                                         |
| (3) Only documentation for useless      |
| programs transcends the                 |
|                                         |
\ first two laws.                         /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

$output = shell_exec("/usr/games/fortune | /usr/games/cowsay");
echo $output;