检查集群机器是否有down机或者网络故障

#!/bin/bash
#author:dcc
#date:2018/05/25
#version:v1
#description:test the PC whether up ,you must appoint a NET ID
if [ -z $1 ];then
	echo "Error:you must appoint a NET ID"
	exit 1
fi
test01=`echo $1 | awk -F . ‘{print $4}‘`
if [ ! $test01 -eq 0 ];then
	echo "Error:please appoint a right NET ID"
	exit 2	
fi
tmp=$1
ID=${tmp%%0*}
for i in {1..254}
do
	ping -c 3 -i 0.3 -W 1 $ID$i &> /dev/null
	if [ ! $? -eq 0 ];then
		echo "$ID$i is down"
	else
		echo "$ID$i is up"
	fi
done