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Enjoy a randomly generated fortune:

$ fortune | cowsay

 _________________________________________
/ Systems have sub-systems and            \
| sub-systems have sub-systems and so on  |
| ad infinitum -- which is why we're      |
| always starting over.                   |
|                                         |
| -- Epigrams in Programming, ACM SIGPLAN |
\ Sept. 1982                              /
 -----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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