Not the GP, but I have one non-partioning AIX trivia I discovered by accident. Turns out that malloc(0) returns NULL on AIX, but non-null on Linux, SunOS, and Irix. (I was surprised multiple ways on that one!)

Sometimes I think "it's a UNIX system, I know this" but I've been caught by subtle differences before too.

killall is very different between Linux and Solaris, for example. I would rather have not found this out on a client machine for the first time.

Now that you know, can you conceptualize reasons why each pattern might be a correct preference? Among those reasons, which would you prefer as a system?

^^^ THAT is how an Interview Question should work around this factoid.

That one has bitten me more than once