#!/bin/sh

FAIL=9

# Msg numbers *must* be 16 and 31.
MSG_TOO_OLD=16	# Pre-Jaguar
MSG_TOO_NEW=17	# Post-Jaguar

if [ -d /usr/bin/sw_vers ]; then
	VER=`/usr/bin/sw_vers | grep ProductVersion: | awk '{ print $2 }'`
	echo $VER
else
	VER=`awk 'BEGIN { have_match=0; }
		/ProductVersion/ { have_match = 1; next }
		{ if (have_match) { gsub(/<[^>]*>/, ""); print $1; exit 0 } }' /System/Library/CoreServices/SystemVersion.plist`
fi

case $VER in
10.0|10.1|10.0.*|10.1.*)
	exit `expr $FAIL + $MSG_TOO_OLD`
	;;

10.2|10.2.*)
	exit 0
	;;
*)
	exit `expr $FAIL + $MSG_TOO_NEW`
	;;
esac