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Enjoy a randomly generated fortune:

$ fortune | cowsay

 ________________________________________
/  One day a student came to Moon and    \
| said, "I understand how to make a      |
| better garbage collector. We must keep |
| a reference count of the pointers to   |
| each cons."                            |
|                                        |
| Moon patiently told the student the    |
| following story -- "One day a student  |
| came to Moon and said, "I understand   |
| how to make a better garbage           |
\ collector..."                          /
 ----------------------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

Here is the PHP code:

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