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Enjoy a randomly generated fortune:

$ fortune | cowsay

 ________________________________________
/ If you haven't enjoyed the material in \
| the last few lectures then a career in |
| chartered accountancy beckons.         |
|                                        |
| -- Advice from the lecturer in the     |
| middle of the Stochastic               |
|                                        |
\ Systems course.                        /
 ----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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