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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ This thing all things devours: Birds,   \
| beasts, trees, flowers; Gnaws iron,     |
| bites steel; Grinds hard stones to      |
| meal; Slays king, ruins town, And beats |
\ high mountain down.                     /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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