Darwin Version

[Dave Horsfall]

On Mon, 5 Oct 2015, Daniel J. Luke wrote:

> > You're saying that Darwin was written from scratch and not evolved 
> > from a modified FreeBSD 4.1, or am I thinking of an earlier MacOS?
> 
> it all depends on what you mean by ‘written from scratch’, ‘evolved 
> from’, and how detailed you care to be with the history.

See next reply.

Anyway, "from scratch" => "clean-room implementation" e.g. Unix/Linux, 
whereas "evolved" => V5/V6/V7/4.nBSD/BSDI/FreeBSD/OpenBSD/etc.

As for how detailed, I doubt we'll ever know the full story, as many 
versions of Unix were developed over the 40 years that I've been using it 
(SYS-III, SYS-V, SunOS, Solaris, Ultrix, IRIX, Xenix, SCO, AIX, etc; I've 
used all those and more).

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."