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Enjoy a randomly generated fortune:

$ fortune | cowsay

 ______________________________________
/ And you can't get any Watney's Red   \
| Barrel, because the bars close every |
\ time you're thirsty...               /
 --------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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