#!/usr/bin/ksh
if [ $# -lt 3 ]
then
	echo "hbwrite:  Incorrect usage.  Correct Usage:"
        print "Usage: hbtalk <usr1> [<usr2> . . . <usrn>] : broadcast"
	print "Do not use quotes around broadcast message"
        exit 1
else	
	if [ $1 = ":" ]
	then
	    echo "hbwrite:  Incorrect usage.  Correct Usage:"
	    print "Usage: hbtalk <usr1> [<usr2> . . . <usrn>] : broadcast"
	    print "Do not use quotes around broadcast message"
	    exit 1
	fi
	tester=0
	message=""
	for i
	do
	    if [ $tester -eq 1 ]
	    then
		message="$message $i"
	    fi
	    if [ $i = ":" ]
            then 
		tester=1
	    fi
	 done
	 if [ $tester -eq 0 ]
	 then
	    echo "hbwrite:  Incorrect usage.  Correct Usage:"
            print "Usage: hbtalk <usr1> [<usr2> . . . <usrn>] : broadcast"
	    print "Do not use quotes around broadcast message"
            exit 1
	 elif [ -z $message ]
	 then
	    echo "hbwrite:  Incorrect usage.  Correct Usage:"
            print "Usage: hbtalk <usr1> [<usr2> . . . <usrn>] : broadcast"
	    print "Do not use quotes around broadcast message"
            exit 1
	 fi
	 tester=0
	 eval=0
	 for i
	 do   
	    if [ $i = ":" ]
	    then
		tester=1
	    fi
	    if [ $tester -eq 0 ]
	    then
		who | awk '{ print $i }' | sort -u | grep $i
		if [ $? -eq 0 ]
		then
		    echo "$message" | write $i
		else
		    echo "$i not found.  Trying next user"
                    eval=2
		fi
	    fi
	done
	exit $eval
fi