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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ I still maintain the point that         \
| designing a monolithic kernel in 1991   |
| is a fundamental error. Be thankful you |
| are not my student. You would not get a |
| high grade for such a design :-)        |
|                                         |
\ -- Andrew Tanenbaum to Linus Torvalds   /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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