#!/bin/bash
Timeout=0;
Timeout_limit=1;
Timeout_flag=0;
IP="<a href="https://www.baidu.com/s?wd=8.8.8.8&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YzPj7-uHTzuWf3rAnsn1-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPHfkrjm4P1bk" target="_blank" class="baidu-highlight">8.8.8.8</a>"
                                                                                                                                                                                                
while [ 1 ]
do
  # 取平均延迟的整数位
   Timeout="`ping $IP -c 3 | grep 'min/avg/max/mdev'|awk '{print $4}'|cut -b '7'`"
   if [ $Timeout -ge $Timeout_limit ] && [ $Timeout_flag -ne 1 ]; then
      echo ping timeout, average delay=$Timeout ms
      mail -s 'Ping Delay' 邮箱 < ar/log/boot.log
      Timeout_flag=1
   fi
   if [ $Timeout -lt $Timeout_limit ] && [ $Timeout_flag -ne 0 ]; then
      echo ping recovery, average delay=$Timeout ms
      mail -s 'Ping recovery' 邮箱 < ar/log/boot.log
      Timeout_flag=0
   fi
   sleep 5
done