#!/bin/sh
#
# $Id: os-type,v 5.1.1.2 90/01/11 17:16:09 jsp Exp Locker: jsp $
#
# Copyright (c) 1989 Jan-Simon Pendry
# Copyright (c) 1989 Imperial College of Science, Technology & Medicine
# Copyright (c) 1989 The Regents of the University of California.
# All rights reserved.
#
# This code is derived from software contributed to Berkeley by
# Jan-Simon Pendry at Imperial College, London.
#
# Redistribution and use in source and binary forms are permitted
# provided that the above copyright notice and this paragraph are
# duplicated in all such forms and that any documentation,
# advertising materials, and other materials related to such
# distribution and use acknowledge that the software was developed
# by Imperial College of Science, Technology and Medicine, London, UK.
# The names of the College and University may not be used to endorse
# or promote products derived from this software without specific
# prior written permission.
# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
#	%W% (Berkeley) %G%
#

#
# Take a pot-shot at your os type
#
echo "	... No OS= option specified; dynamically determining OS type" >&2

#
# First try poking around in /etc/motd
#

case "`exec 2>/dev/null; head -2 /etc/motd`" in
*"Sun UNIX 4.2 Release 3."*)	OS=sos3;;
*"SunOS Release 4."*)		OS=sos4;;
*"HP-UX on the HP"*)		OS=hpux;;
*"Ultrix V2."*)			OS=u2_2;;
*"Ultrix-32 V3."*)		OS=u3_0;;
*"Ultrix Worksystem V2.0"*)	OS=u3_0;;
*"HLH OTS Version 1."*)		OS=hlh42;;
*"RISC iX release 1."*)		OS=riscix;;
*"4.4 BSD UNIX"*)		OS=bsd44;;
*"4.3 BSD UNIX"*)		if [ -f /etc/minidisk ]; then
					OS=acis43
				elif [ -f /sbin/nfsiod ]; then
					OS=bsd44	# prototype
				else
					OS=xinu43
				fi;;
*"Alliant Concentrix"*)		OS=concentrix;;
*"Umax 4.3"*)			OS=umax43;;
*)
#
# Well, that didn't work so apply some heuristics
# to the filesystem name space...
#
				echo "	... inspecting File system ..." >&2
				if [ -f /usr/bin/cat ]; then
					OS=sos4
				elif [ -f /etc/nd ]; then
					OS=sos3
				elif [ -f /etc/elcsd ]; then
					echo "	... Ultrix - assuming U3.0 ..." >&2
					OS=u3_0
				elif [ -f /hp-ux ]; then
					OS=hpux
				elif [ -f /etc/ttylocal ]; then
					OS=xinu43
				elif [ -f /etc/minidisk ]; then
					OS=acis43
				elif [ -f /etc/toolboxdaemon ]; then
					OS=aux
				elif [ -f /sbin/nfsiod ]; then
					OS=bsd44
				elif [ -d /vrm ]; then
					OS=aix2
				else
					case "`(sh arch)2>/dev/null`" in
					powernode) OS=utx32;;
					ibm032)    OS=acis43;;
					*)	   OS=unknown;;
					esac
				fi;;
esac

echo "	... OS appears to be \"${OS}\"" >&2
echo "${OS}"
exit 0
