#!/bin/ksh
#Ping all the hosts on the local network.  Let's see who answers.

#Get the broadcast address of this network.
address=`/sbin/ifconfig -a | awk '$5 == "broadcast" {print $6}'`

#Cut the ping off after the first round of answers.
/usr/sbin/ping -s $address |
awk '
	NR > 1 {
		if ($0 ~ /icmp_seq=0\./) {
			print
		} else {
			exit 0
		}
	}
' |

#Remove everything except the IP address of each host that answered.
sed -n 's/.*[^0-9]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*/\1/p'