使用ping命令进行连通性校验的shell脚本

#!/bin/sh

IP="10.10.100.1"

kill_deamon() {

	/etc/init.d/deamon stop
}

start_deamon(){
	/etc/init.d/deamon start
}


check_ping() {

local total="0"
local i="0"

while [ $i -lt 10 ]; do

	local line=""
		#echo "ping $IP"
		line=`ping $IP -c 1 -s 1 -W 1 ¦ grep "100% packet loss" ¦ wc -l`
		
		if [ "${line}" != "0" ]; then
			echo "ping failed!"
			total=$((total+1))
		else
			echo "ping ok!"
			total="0"
		fi
			i=$((i+1))
			sleep 1
	done

	if [ $total -gt 5 ]; then
		echo "check failed!"
		return 1
	else 
		echo "check ok!"
		return 0
	fi
}


start(){

local rtl=""
	while [ 1 ]; do
		check_ping
		rtl=$?
		
		if [ "$rtl" != "0" ]; then
			echo " restart deamon start "
			kill_deamon
			start_deamon
		else
			sleep 600;
		fi
	done
}

start