dave at horsfall.org
Tue Oct 6 00:53:46 PDT 2015
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."
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