From nyteroot‘s comment at
http://slashdot.org/comments.pl?sid=131235&cid=10961947 :

 1n r3sp0ns3 t0 th1s, 1 h4v3 0nly 0n3 th1ng t0 s4y:

    $ m4n scr33n
    -bash: m4n: command not found

...d4mn1t.