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# os.sh - operating system specifics
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# This file is included at the start of processing. Its role is
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# to set the variables OS, OSREL, OSMAJOR, MACHINE and MACHINE_ARCH to
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# reflect the current system.
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# It also sets variables such as MAILER, LOCAL_FS, PS_AXC to hide
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# certain aspects of different UNIX flavours.
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# Simon J. Gerraty <sjg@crufty.net>
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# $Id: os.sh,v 1.44 2010/06/29 15:37:21 sjg Exp $
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# @(#) Copyright (c) 1994 Simon J. Gerraty
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# This file is provided in the hope that it will
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# be of use. There is absolutely NO WARRANTY.
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# Permission to copy, redistribute or otherwise
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# use this file is hereby granted provided that
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# the above copyright notice and this notice are
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# Please send copies of changes and bug-fixes to:
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# this lets us skip sourcing it again
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OSMAJOR=`IFS=.; set $OSREL; echo $1`
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MACHINE_ARCH=`uname -p 2>/dev/null || echo $MACHINE`
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# there is at least one case of `uname -p` outputting
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# a bunch of usless drivel
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case "$MACHINE_ARCH" in
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*[!A-Za-z0-9_-]*) MACHINE_ARCH="$MACHINE";;
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# we need this here, and it is not always available...
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/*) test $t $1 && echo $1;;
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# some shells cannot correctly handle `IFS`
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# in conjunction with the for loop.
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_dirs=`IFS=:; echo ${2:-$PATH}`
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test $t $d/$1 && { echo $d/$1; break; }
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# tr is insanely non-portable wrt char classes, so we need to
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# spell out the alphabet. sed y/// would work too.
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${TR:-tr} abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
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${TR:-tr} ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
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AIX) # everyone loves to be different...
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OSREL="$OSMAJOR.`uname -r`"
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SHARE_ARCH=$OS/$OSMAJOR.X
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CHOWN=`Which chown /usr/etc:/usr/bin`
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# Great! Solaris keeps moving arch(1)
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# should just bite the bullet and use uname -p
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arch=`Which arch /usr/bin:/usr/ucb`
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# uname -m just says sun which could be anything
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MACHINE=$MACHINE_ARCH
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# can you believe that ln on Solaris defaults to
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# overwriting an existing file!!!!! We want one that works!
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test -x /usr/xpg4/bin/ln && LN=${LN:-/usr/xpg4/bin/ln}
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# wonderful, 5.8's tr again require's []'s
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# but /usr/xpg4/bin/tr causes problems if LC_COLLATE is set!
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# use toUpper/toLower instead.
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case "$OS/$MACHINE_ARCH" in
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*sun386) SHARE_ARCH=$MACHINE_ARCH;;
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# NetBSD at least has good backward compatability
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# so NetBSD/i386 is good enough
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NetBSD) SHARE_ARCH=$OS/${MACHINE_ARCH:-$MACHINE};;
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arch=`Which arch /usr/bin:/usr/ucb:$PATH`
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MACHINE_ARCH=`$arch -s`
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TMP_DIRS="/tmp /usr/tmp"
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# don't rely on /bin/sh, its broken
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_shell=/bin/ksh; ENV=
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# also, no one would be interested in OSMAJOR=A
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?.09*) OSMAJOR=9; PS_AXC=-e;;
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?.10*) OSMAJOR=10; PS_AXC=-e;;
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OSMAJOR=`IFS=.; set $OSREL; echo $1`
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MACHINE_ARCH=`uname -m`
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# Not really any such thing as Linux, but
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# this covers red-hat and hopefully others.
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i?86) MACHINE_ARCH=i386;; # we don't care about i686 vs i586
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[ -x /usr/bin/md5sum ] && { MD5=/usr/bin/md5sum; export MD5; }
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x86pc) MACHINE_ARCH=i386;;
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BeBox) MACHINE_ARCH=powerpc;;
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BeMac) MACHINE_ARCH=powerpc;;
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BePC) MACHINE_ARCH=i386;;
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HOSTNAME=${HOSTNAME:-`( hostname ) 2>/dev/null`}
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HOSTNAME=${HOSTNAME:-`( uname -n ) 2>/dev/null`}
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*.*) HOST=`IFS=.; set -- $HOSTNAME; echo $1`;;
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TMP_DIRS=${TMP_DIRS:-"/tmp /var/tmp"}
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MACHINE_ARCH=${MACHINE_ARCH:-$MACHINE}
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# we mount server:/share/arch/$SHARE_ARCH as /usr/local
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SHARE_ARCH=${SHARE_ARCH:-$OS/$OSMAJOR.X/$MACHINE_ARCH}
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# Some people like have /share/$HOST_TARGET/bin etc.
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HOST_TARGET=`echo ${OS}${OSMAJOR}-${MACHINE_ARCH} | toLower`
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case `echo -n .` in -n*) N=; C="\c";; *) N=-n; C=;; esac
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export OS MACHINE MACHINE_ARCH OSREL OSMAJOR LOCAL_FS TMP_DIRS MAILER N C K PS_AXC
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export LN SHARE_ARCH TR
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os.sh
