#!/bin/bashNOW="`date +%Y%m%d-%H:%M:%S`"PHONES=15134567893IP=10.100.8.78GATEWAY=10.100.30.1#ping失誤的短信內容content1="host is failed"#arp主機網關失誤的短信內容content2="GW is failed"#ping日志路徑LogFile="/tmp/ping`date "+%Y%m%d-%H-%M-%S"`.log"#ping對方主機100個包并將結果輸出到日志ping -c100 $IP &> $LogFile#用if，else語句判斷是否ping通，if [ "$?" == "0" ];   then    echo "$NOW $IP is ok">> $LogFileelse    echo "$NOW $IP is down">> $LogFile &/usr/bin/curl -d "phones=$PHONES&content= $NOW $IP $content" "content-type: application/x-www-form-urlencoded;charset=UTF-8" "http://短信網關:8080"fi#分隔符echo "================================" >> $LogFile#arp自己網關arp $GATEWAY &>>$LogFilenum=$(cat $LogFile |grep eth0|wc -l)  if [ "$num" == "0" ];     then     echo "$NOW $GATEWAY is down">> $LogFile &/usr/bin/curl -d "phones=$PHONES&content= $NOW $GATEWAY $content1" "content-type: application/x-www-form-urlencoded;charset=UTF-8" "http://短信網關:8080"fi