On Tue, 2018-10-30 at 23:45 +0000, Rick Stevens wrote:
And remember, under that cute, glitzy desktop, OSX is simply BSD Unix. (Shhhh! Don't tell anyone! It's a secret!)
Sure, but the complete MacOS is not "simply" BSD. It's a BSD (actually XNU)-based kernel with an enormous amount of additional non-free stuff, including the whole UI system, filesystems, drivers etc., which is what makes the real difference to the end user.
poc