Re: mac is not unix [Re: What was that about hubris?]

[der Mouse <mouse () rodents-montreal org>]

> > > > > "An operating system" in general may or may not be [split into
> > > > > core, GUI, and CLI]; [...]
> > You don't need to go even that far.  Just consider NetBSD (or Linux,
> > or whatever) on hardware without a GUI-capable framebuffer - [...]
> We're talking about Mac here, right?

I, at least, wasn't.

The original history was

[Paul M. Moriarty]
> > > [...] a Mac is a UNIX box with a great GUI that [...]
[Gadi]
> > But as it was explained to me by a very nice guy, an operating
> > system is built of three components.  The core, the GUI and the
> > command interface.  Of all these, only the last is Unix-based.

to which I replied

> Well, I do believe Mac OS X is built along those lines.  "An
> operating system" in general may or may not be; [...]

It's true there was a certain amount of "under OS X" context for what
you wrote, since the last sentence is obviously false for many non-OSX
OSes for which the first is true (consider, eg, System 7 for 68k Macs).
I read that context as applying to only that last sentence, and my "in
general" was at least partly an attempt to make that explicit;
apparently I wasn't explicit enough to make my meaning clear.

I'd argue with your "very nice guy" a little even for OS X, though,
since there is a substantial amount of Unix basing in the libc layer,
which is used by much more than just the CLI; of the three components
listed, it would have to be part of the core.

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