Earlier quoted context omitted.
Maybe, but that doesn't sound like my interview at Google, which was interesting but really rather random. Perhaps most notably, one interviewer became irate that I didn't know the "ps -o" flags off of the top of my head. :-/
According to `man ps` on my Mac, there are nearly seventy of them - how many did he want you to know?!
But the real magic comes when they run out. What do they do then? Good people say that they don't know. Often, they will take guesses at a few more based on general principles. E.g., "I'm sure there are arguments for sorting, but I only use top for that." Or, "There must be more ways to filter, but I only do it by user or command." They'll usually look a bit uncomfortable, because they are the sort of person who likes knowing things. But what they won't do is bluff or make things up.
And honestly, that's my biggest tip for hiring: find people who like understanding things and know a good amount for their level, but are willing to say when they don't know. People who can't do that are dangerous.