os.sh revision 331246 
1:
2# NAME:
3#	os.sh - operating system specifics
4#
5# DESCRIPTION:
6#	This file is included at the start of processing. Its role is
7#	to set the variables OS, OSREL, OSMAJOR, MACHINE and MACHINE_ARCH to
8#	reflect the current system.
9#	
10#	It also sets variables such as MAILER, LOCAL_FS, PS_AXC to hide
11#	certain aspects of different UNIX flavours. 
12#
13# SEE ALSO:
14#	site.sh,funcs.sh
15#
16# AUTHOR:
17#	Simon J. Gerraty <sjg@crufty.net>
18
19# RCSid:
20#	$Id: os.sh,v 1.55 2017/12/11 20:31:41 sjg Exp $
21#
22#	@(#) Copyright (c) 1994 Simon J. Gerraty
23#
24#	This file is provided in the hope that it will
25#	be of use.  There is absolutely NO WARRANTY.
26#	Permission to copy, redistribute or otherwise
27#	use this file is hereby granted provided that 
28#	the above copyright notice and this notice are
29#	left intact. 
30#      
31#	Please send copies of changes and bug-fixes to:
32#	sjg@crufty.net
33#
34
35# this lets us skip sourcing it again
36_OS_SH=:
37
38OS=`uname`
39OSREL=`uname -r`
40OSMAJOR=`IFS=.; set $OSREL; echo $1`
41MACHINE=`uname -m`
42MACHINE_ARCH=`uname -p 2>/dev/null || echo $MACHINE`
43
44# there is at least one case of `uname -p` outputting
45# a bunch of usless drivel
46case "$MACHINE_ARCH" in
47unknown|*[!A-Za-z0-9_-]*) MACHINE_ARCH="$MACHINE";;
48esac
49        
50# we need this here, and it is not always available...
51Which() {
52	case "$1" in
53	-*) t=$1; shift;;
54	*) t=-x;;
55	esac
56	case "$1" in
57	/*)	test $t $1 && echo $1;;
58	*)
59		# some shells cannot correctly handle `IFS`
60		# in conjunction with the for loop.
61		_dirs=`IFS=:; echo ${2:-$PATH}`
62		for d in $_dirs
63		do
64			test $t $d/$1 && { echo $d/$1; break; }
65		done
66		;;
67	esac
68}
69
70# tr is insanely non-portable wrt char classes, so we need to
71# spell out the alphabet. sed y/// would work too.
72toUpper() {
73	${TR:-tr} abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
74}
75
76toLower() {
77	${TR:-tr} ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
78}
79
80K=
81case $OS in
82AIX)	# everyone loves to be different...
83	OSMAJOR=`uname -v`
84	OSREL="$OSMAJOR.`uname -r`"
85	LOCAL_FS=jfs
86	PS_AXC=-e
87	SHARE_ARCH=$OS/$OSMAJOR.X
88	;;
89SunOS)
90	CHOWN=`Which chown /usr/etc:/usr/bin`
91	export CHOWN
92	
93	# Great! Solaris keeps moving arch(1)
94	# should just bite the bullet and use uname -p
95	arch=`Which arch /usr/bin:/usr/ucb`
96	
97	MAILER=/usr/ucb/Mail
98	LOCAL_FS=4.2
99	
100	case "$OSREL" in
101	4.0*)
102		# uname -m just says sun which could be anything
103		# so use arch(1).
104		MACHINE_ARCH=`arch`
105		MACHINE=$MACHINE_ARCH
106		;;
107	4*)
108		MACHINE_ARCH=`arch`
109		;;
110	5*)
111		K=-k
112		LOCAL_FS=ufs
113		MAILER=mailx
114		PS_AXC=-e
115		# can you believe that ln on Solaris defaults to
116		# overwriting an existing file!!!!! We want one that works!
117		test -x /usr/xpg4/bin/ln && LN=${LN:-/usr/xpg4/bin/ln}
118		# wonderful, 5.8's tr again require's []'s
119		# but /usr/xpg4/bin/tr causes problems if LC_COLLATE is set!
120		# use toUpper/toLower instead.
121		;;
122	esac
123	case "$OS/$MACHINE_ARCH" in
124	*sun386)	SHARE_ARCH=$MACHINE_ARCH;;
125	esac
126	;;
127*BSD)
128	K=-k
129	MAILER=/usr/bin/Mail
130	LOCAL_FS=local
131	: $-,$ENV
132	case "$-,$ENV" in
133	*i*,*) ;;
134	*,|*ENVFILE*) ;;
135	*) ENV=;;
136	esac
137	# NetBSD at least has good backward compatibility
138	# so NetBSD/i386 is good enough
139	case $OS in
140	NetBSD)
141	        LOCALBASE=/usr/pkg
142		HOST_ARCH=$MACHINE
143		SHARE_ARCH=$OS/$HOST_ARCH
144		;;
145	OpenBSD)
146		arch=`Which arch /usr/bin:/usr/ucb:$PATH`
147		MACHINE_ARCH=`$arch -s`
148		;;
149	esac
150	NAWK=awk
151	export NAWK
152	;;
153HP-UX)
154	TMP_DIRS="/tmp /usr/tmp"
155	LOCAL_FS=hfs
156	MAILER=mailx
157	# don't rely on /bin/sh, its broken
158	_shell=/bin/ksh; ENV=
159	# also, no one would be interested in OSMAJOR=A
160	case "$OSREL" in
161	?.09*)	OSMAJOR=9; PS_AXC=-e;;
162	?.10*)	OSMAJOR=10; PS_AXC=-e;;
163	esac
164	;;
165IRIX)
166	LOCAL_FS=efs
167	;;
168Interix)
169	MACHINE=i386
170	MACHINE_ARCH=i386
171	;;
172UnixWare)
173	OSREL=`uname -v`
174	OSMAJOR=`IFS=.; set $OSREL; echo $1`
175	MACHINE_ARCH=`uname -m`
176	;;
177Linux)
178	# Not really any such thing as Linux, but
179	# this covers red-hat and hopefully others.
180	case $MACHINE in
181	i?86)	MACHINE_ARCH=i386;; # we don't care about i686 vs i586
182	esac
183	LOCAL_FS=ext2
184	PS_AXC=axc
185	[ -x /usr/bin/md5sum ] && { MD5=/usr/bin/md5sum; export MD5; }
186	;;
187QNX)
188	case $MACHINE in
189	x86pc)	MACHINE_ARCH=i386;;
190	esac
191	;;
192Haiku)
193	case $MACHINE in
194	BeBox)	MACHINE_ARCH=powerpc;;
195	BeMac)	MACHINE_ARCH=powerpc;;
196	BePC)	MACHINE_ARCH=i386;;
197	esac
198	;;
199esac
200LOCALBASE=${LOCALBASE:-/usr/local}
201
202HOSTNAME=${HOSTNAME:-`( hostname ) 2>/dev/null`}
203HOSTNAME=${HOSTNAME:-`( uname -n ) 2>/dev/null`}
204case "$HOSTNAME" in
205*.*)	HOST=`IFS=.; set -- $HOSTNAME; echo $1`;;
206*)	HOST=$HOSTNAME;;
207esac
208
209TMP_DIRS=${TMP_DIRS:-"/tmp /var/tmp"}
210MACHINE_ARCH=${MACHINE_ARCH:-$MACHINE}
211case "$MACHINE_ARCH" in
212x86*64|amd64) MACHINE32_ARCH=i386;;
213*64) MACHINE32_ARCH=`echo $MACHINE_ARCH | sed 's,64,32,'`;;
214*) MACHINE32_ARCH=$MACHINE_ARCH;;
215esac
216HOST_ARCH=${HOST_ARCH:-$MACHINE_ARCH}
217HOST_ARCH32=${HOST_ARCH32:-$MACHINE32_ARCH}
218# we mount server:/share/arch/$SHARE_ARCH as /usr/local
219SHARE_ARCH_DEFAULT=$OS/$OSMAJOR.X/$HOST_ARCH
220SHARE_ARCH=${SHARE_ARCH:-$SHARE_ARCH_DEFAULT}
221LN=${LN:-ln}
222TR=${TR:-tr}
223
224# Some people like have /share/$HOST_TARGET/bin etc.
225HOST_TARGET=`echo ${OS}${OSMAJOR}-$HOST_ARCH | tr -d / | toLower`
226HOST_TARGET32=`echo ${OS}${OSMAJOR}-$HOST_ARCH32 | tr -d / | toLower`
227export HOST_TARGET HOST_TARGET32
228
229case `echo -n .` in -n*) N=; C="\c";; *) N=-n; C=;; esac
230
231Echo() {
232	case "$1" in
233	-n) _n=$N _c=$C; shift;;
234	*) _n= _c=;;
235	esac
236	echo $_n "$@" $_c
237}
238
239export HOSTNAME HOST	    
240export OS MACHINE MACHINE_ARCH OSREL OSMAJOR LOCAL_FS TMP_DIRS MAILER N C K PS_AXC
241export LN SHARE_ARCH TR
242export LOCALBASE
243
244case /$0 in
245*/os.sh)
246	for v in $*
247	do
248		eval vv=\$$v
249		echo "$v='$vv'"
250	done
251	;;
252*/host_target32) echo $HOST_TARGET32;;
253*/host_target) echo $HOST_TARGET;;
254esac
255
256