*BSD News Article 20538


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From: sef@kithrup.com (Sean Eric Fagan)
Subject: Re: POSIX, COSE and 386BSD - How do they fit in?
Organization: Kithrup Enterprises, Ltd.
References: <kjb.747366876@manda.cgl.citri.edu.au>
Message-ID: <CCyqCn.1EB@kithrup.com>
Keywords: POSIX, COSE, 386BSD
Date: Tue, 7 Sep 1993 02:45:44 GMT
Lines: 14

In article <kjb.747366876@manda.cgl.citri.edu.au> kjb@cgl.citri.edu.au (Kendall Bennett) writes:
>Sounds like a great move to me, but I was wondering how POSIX fits into
>this scheme? Isn't this what POSIX was intended to do anyway? Is POSIX
>and integral part of COSE, or is it something separate?

COSE is based on the X/Open Portability Guide.  Version 4, I think (hence,
XPG4).  The various versions of XPG are unix standards; POSIX is supposed
to be a standard for an OS, and many operating systems can be POSIX-
compliant (e.g., VMS, Windows/NT, some IBM OSes).

The XPG standards are closer to SysV than BSD.  XPG4 is pretty much a
strict superset of POSIX 1003.1, and hopefully 1003.2, although I don't
know for certain about the latter.