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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ When users see one GUI as beautiful,    \
| other user interfaces become ugly. When |
| users see some programs as winners,     |
| other programs become lossage.          |
|                                         |
| Pointers and NULLs reference each       |
| other. High level and assembler depend  |
| on each other. Double and float cast to |
| each other. High-endian and low-endian  |
| define each other. While and until      |
| follow each other.                      |
|                                         |
| Therefore the Guru programs without     |
| doing anything and teaches without      |
| saying anything. Warnings arise and he  |
| lets them come; processes are swapped   |
| and he lets them go. He has but doesn't |
| possess, acts but doesn't expect. When  |
| his work is done, he deletes it. That   |
\ is why it lasts forever.                /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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