Not very sure, but months ago I read this (but he seems to talk about
BSD user utils more than the Kernel).
https://www.quora.com/Is-macOS-considered-to-be-a-BSD-UNIX
Yes, Apple’s macOS can be considered to be a BSD UNIX.
1) Apple’s macOS is an officially certified UNIX, that takes care of
the UNIX part of the question.
2) NeXT was created by using BSD OS, the Mach microkernel and then
modifying those with new modules created by NeXT.
3) Today's macOS is descended from NeXT (which Apple acquired and
transitioned macOS to in 1999)
4) Apple replaced the NeXT user interface with the world famous
Macintosh user interface
5) Apple, slowly over the years removed the NeXT modules and
replaced them with pure BSD modules and some Apple custom modules
6) The Mach microkernel was replaced with the Appel XNU hybrid kernel
7) As of macOS Catalina 10.15, there is no longer any NeXT modules
in macOS, macOS is now mostly BSD with a few custom Apple modules and of
course the Macintosh user interface, which has been polished over the years
8) So yes, macOS is BSD and at the same time it still is Apple Macintosh
9) If you go to the command line you will see that it is almost
completely BSD with a few Apple commands for security, file system, etc.
10) If you are using it normally, then what you see is a pure
Macintosh user experience.
On 10/29/20 1:32 PM, Bob Sneidar via use-livecode wrote:
Are we sure about this?? I thought Apple had moved completely away from BSD a
long while back.
Bob S
On Oct 28, 2020, at 12:53 , Heriberto Torrado via use-livecode
<use-livecode@lists.runrev.com> wrote:
Thanks Andre,
I realized that BSD kernels are not the same as MacOS kernels.
As you say: MacOS has a hybrid kernel based on XNU and some parts of BSD.
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