That depends on the built in help mechanism. If I was unfamiliar with linux and it was linux, maybe. It it was OpenBSD and I was unfamiliar with it, I could p

That depends on the built in help mechanism. If I was unfamiliar with linux and it was linux, maybe. It it was OpenBSD and I was unfamiliar with it, I could probably get everything I needed (for core OS stuff at least) purely from the man system, as long as I had some very basic idea of how to use the shell. OpenBSD has exceptional man pages, to the degree you probably can't understand until you've spent a few hours reading through some of them.