#!/bin/bash #website test scripts while true;do         for cycle_temp in `cat url_list`         do                 if  lynx -dump `echo ${cycle_temp}` -accept_all_cookies|grep "true";then                         echo "The website is running naturally"                 else                         echo "${cycle_temp} has been offline please attend it now!">/opt/test.txt                         mail -v -s "website down mail" reterry123@163.com < /opt/test.txt                 fi         done         sleep 2s done