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From: njacobs@kong.gsfc.nasa.gov (Nick Jacobs - EOS)
Newsgroups: comp.unix.programmer
Subject: Re: Books on portability between Unixes?
Summary: X/Open XPG3
Message-ID: <1991May20.174803.15870@kong.gsfc.nasa.gov>
Date: 20 May 91 17:48:03 GMT
References: <1991May9.181650.12516@homecare.COM>
Followup-To: comp.unix.programmer
Organization: Goddard Space Flight Center
Lines: 16

In article <1991May9.181650.12516@homecare.COM> jessea@homecare.COM (Jesse W. Asher) writes:
>I'd like to write some software that is very portable between different
>types of Unix.  I'm not just talking about BSD vs. SystemV, but also how
    [...etc]

Get the XPG manuals from X/Open. Use them as programmer's reference
manuals.
The X/Open standards are somewhat similar in intent to Posix, but
the Posix standard is not really useful because it is too small
a subset of Unix. Whereas X/Open is a pretty big subset.
If your Unix vendor plans to be still around in a couple of years,
he/she/it fully supports the X/Open standard.

>  Jesse W. Asher

Nick Jacobs