检测主机是否在线小脚本

#!/bin/sh
#filename:Check-host_online.sh
#date:2015-12-23
#作者：linuxzkq
#Email:1729294227@qq.com
#version:v1.0

for n in `seq 254`
do
   ping -c1 10.0.0.$n >/dev/null 2>&1
   if [ $? -eq 0 ]
     then
         echo "10.0.0.$n is up" >>/data/uplist.log
   else
         echo "10.0.0.$n is down" >>/data/downlist.log
   fi
done