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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _______________________________________
/ If A equals success, then the formula \
| is _A = _X + _Y + _Z. _X is work.          |
| _Y is play. _Z is keep your mouth       |
| shut.                                 |
|                                       |
\ -- Albert Einstein                    /
 ---------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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