shell 内网主机存活探测器

#!/bin/bash
#
#date:2014/12/18
#blog:www.cnblogs.com/outline
#by :Joe

if [ $# -lt 1 ] ; then
echo " err, usage: ping.sh ARg "
echo " eg : ping.sh  192.168.1"
exit 8
fi

ips="$1"
stat=1
for ip in $(seq 1 254)
do
ping -c 1 ${ips}.${ip} >/dev/null && stat=1 || stat=0
if [ $stat -eq 1 ];then
echo " $ips.$ip is up"

fi
done

if [ $stat -eq 1 ]; then
echo " no host up"
fi