From owner-freebsd-questions Fri Aug 18 9:53:35 2000 Delivered-To: freebsd-questions@freebsd.org Received: from greg.ad9.com (greg.ad9.com [209.233.225.5]) by hub.freebsd.org (Postfix) with ESMTP id 4E52F37B422 for ; Fri, 18 Aug 2000 09:53:33 -0700 (PDT) Received: from greg.ad9.com (nepolon@greg.ad9.com [209.233.225.5]) by greg.ad9.com (8.9.1a/8.9.1) with ESMTP id KAA07951 for ; Fri, 18 Aug 2000 10:13:13 -0700 (PDT) Date: Fri, 18 Aug 2000 10:13:12 -0700 (PDT) From: Steve Lewis X-Sender: nepolon@greg.ad9.com Cc: questions@FreeBSD.ORG Subject: Re: Sun OS (Was: BSD Inquiry...) In-Reply-To: <200008181644.e7IGiuU23126@ptavv.es.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Fri, 18 Aug 2000, Kevin Oberman wrote: > > ...and presumably then Posix is SysV-like cos I know Linus has said that the > > Linux kernel aims to be Posix compatible. > > Just to avoid confusing many, many people, Posix is NOT an operating > system. It is a standard for code portability and specifies things > like utilities and libraries. It, in no way, specifies an OS. VMS was > Posix and I think Windows NT might well be. Just because I know something about it... NT only complies with the most basic levels of Posix as it doesn't fit the perogative of MS to include futher levels of Posix standards. Posix, as you said is only a set of 'policies and procedures' which are recommended for OS to comply with... the purpose being portability and compatibility. IIRC the SysV bootstrapping procedure, and the associated mess of run levels and rc files, doesn't appear in Posix but I very well could be wrong. The fact that there are a number of levels of Posix compliance possible speaks to the intent of the designers of the Posix system. --Steve To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message