The best answer came from Dennis, thank you.   Add the following line in
the top of /etc/profile
#
# (c) Copyright 1990, OPEN SOFTWARE FOUNDATION, INC.
# ALL RIGHTS RESERVED
#
#
# OSF/1 Release 1.0
trap "" 2 3
export LOGNAME TERM
#---------------------- START SESSION LIMIT ----------------------
EXCLUDELIST="/etc/profile.session.exclude"
if [ ! -z "$LOGNAME" ]; then
        if [ `grep -w $LOGNAME $EXCLUDELIST` ]; then
                :
        else
                LOGCNT=`who | grep -w $LOGNAME | wc -l`
                if [ "$LOGCNT" -gt "1" ]; then
                        clear
                        echo "\n\n\n...Only ONE session allowed per
user...\n\n\n"
                        exit 1
                fi
        fi
fi
#----------------------- END SESSION LIMIT -----------------------
....the rest of the global profile......
Ibrahim
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Received on Thu Jul 04 2002 - 12:33:30 NZST