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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ Mac Beer: At first, came only a 16-oz.  \
| can, but now comes in a 32-oz. can.     |
| Considered by many to be a "light"      |
| beer. All the cans look identical. When |
| you take one from the fridge, it opens  |
| itself. The ingredients list is not on  |
| the can. If you call to ask about the   |
| ingredients, you are told that "you     |
| don't need to know." A notice on the    |
| side reminds you to drag your empties   |
\ to the trashcan.                        /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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