Mostly: Classical

[lvlamb]

FWIW, Linux is dubbed "linsux" in Un*x woild.
Has to do with the distributions: all distos want to catch the customer.
Try to install an un-supported (not supported by your disto) software and you are back to manual install.
So, go for BSD and learn Un*x the hard way, as we all did for DOS. Don't wait for Linux (Red Hat?, Novell/SuSe?...?).
What's that Mac OS anyway? Un*x name was Darwin.<ggg>
http://www.opendarwin.org/

In other words, Linux is a project of a core OS maintained by Linus Torwald vs. BSD a core kept portable by a community.
So called "Linux" distributors are a sort of sellers of an own flavour of "Windows-user-friendly-install" packages.
My Windows is so user friendly I can't have it work my way.