From owner-freebsd-advocacy@FreeBSD.ORG Fri Apr 9 10:52:54 2004 Return-Path: Delivered-To: freebsd-advocacy@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1F7EA16A4CE for ; Fri, 9 Apr 2004 10:52:54 -0700 (PDT) Received: from zeus.acuson.com (ac17860.acuson.com [157.226.71.80]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0CCFF43D3F for ; Fri, 9 Apr 2004 10:52:54 -0700 (PDT) (envelope-from DavidJohnson@Siemens.com) Received: from mvaexch02.acuson.com ([157.226.230.209]:2545) by zeus.acuson.com with esmtp (Exim 4.30) id 1BC0B5-0002XQ-6H; Fri, 09 Apr 2004 10:52:31 -0700 Received: by mvaexch02.acuson.com with Internet Mail Service (5.5.2657.72) id ; Fri, 9 Apr 2004 10:42:37 -0700 Received: from dhcp-46-159.acuson.com ([157.226.46.159]) by mvaexch01.acuson.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id HX2WYQ1H; Fri, 9 Apr 2004 10:41:20 -0700 From: Johnson David To: freebsd-advocacy@freebsd.org Organization: Siemens Medical Systems Date: Fri, 9 Apr 2004 10:50:18 -0700 User-Agent: KMail/1.6.1 References: <91A01A3C-89D8-11D8-91B3-0003933DDCFA@essenz.com> In-Reply-To: <91A01A3C-89D8-11D8-91B3-0003933DDCFA@essenz.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200404091050.19040.DavidJohnson@Siemens.com> Subject: Re: Max OS X and BSD X-BeenThere: freebsd-advocacy@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: FreeBSD Evangelism List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Apr 2004 17:52:54 -0000 On Thursday 08 April 2004 08:47 pm, John Von Essen wrote: > I was under the impression that OS X was a derivative of OPENSTEP - > which means from a kernel standpoint it is NOT BSD and NOT System V, > rather it is a MACH kernel (which sort of is a BSD kernel > derivative). The microkernel is MACH, but the microkernel isn't the whole kernel. GNU Hurd uses MACH, as did the Linux kernel in the mkLinux distro for Mac. (Actually, "MACH" is a whole family of related microkernels). Mac's operating environment is Darwin. This is an open source BSD style Unix. It was derived from BSD codebases, of which FreeBSD was one. It gets confusing because GNU and Microsoft have managed to label everything from the kernel to the desktop as "operating system". Darwin is more than an operating system, which is why I used the term "operating environment" earlier. Most of the userand is derived from FreeBSD, with additions from GNU. Apple does use FreeBSD. But not all of Darwin is FreeBSD nor is all of FreeBSD in Darwin. David