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Date: Sun, 9 Jan 2005 20:20:29 -0500
From: Bob Hall <rjhjr@cox.net>
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On Sun, Jan 09, 2005 at 06:17:36PM -0600, Scott Bennett wrote:
>      On Sun, 9 Jan 2005 08:54:55 -0600 Andrew L. Gould <algould@datawok.com>
> wrote:
> 
> >Mac OSX is based upon FreeBSD and may have native versions of the 
> 
>      Mac OSX was--and unless something has changed drastically in the last
> few weeks, still is--based upon NextStep, another proprietary UNIX that was
> based upon a Mach 2.4-2.5 kernel and 4.3BSD above that.

>From http://developer.apple.com/unix/:
	Specifically, it is based in part on BSD 4.4 Lite. On a system
	level, many of the design decisions are made to align with
	BSD-style UNIX systems. Most libraries and utilities are from
	FreeBSD (http://www.freebsd.org/), but some are derived from 
	NetBSD (http://www.netbsd.org/). For future development, Mac OS X 
	has adopted FreeBSD as a reference code base for BSD technology. 
	Work is ongoing to more closely synchronize all BSD tools and 
	libraries with the FreeBSD-stable branch..

Your statements applied to the original OSX. It has shifted to 4.4BSD,
Mach 3, and FBSD during the course of development, with lots of
contributions from Net and OpenBSD. The changes didn't happen in the
last few weeks. They happened continuously during the system's
development.