Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!haven!decuac!avolio
From: avolio@decuac.dec.com (Frederick M. Avolio)
Newsgroups: comp.unix.ultrix
Subject: Determining machine architecture and ULTRIX version
Message-ID: <2785@decuac.DEC.COM>
Date: 24 Oct 89 01:55:43 GMT
References: <253@pvi.UUCP>
Sender: news@decuac.DEC.COM
Reply-To: avolio@decuac.dec.com
Distribution: usa
Organization: Digital Equipment Corp., SWS, Landover, MD
Lines: 5

You can use the command "machine".

Returns "mips" or "vax".

Fred