Re: Linux root p/w
I cannot conceive of any circumstance, no matter how bizarre, in which I would legitimately (no criminal intent) want a null root p/w (feel free to prove your mind is more warped than mine by coming up with one).
The protagonist of the Martian movie could have had a null root password in his abandoned Martian base, at least until he regained some semblance of communication with the Earth.