Shell implements monitoring Web service status

Monitoring Web Service status using the shell

Principle: Download the website and write the output to/dev/null if the command executes successfully (returns 0) Print success prompt, if the download fails, this is downloaded again, if it fails, the print fails

The script is as follows

[[Email protected] ~]# cat checkurl.sh #!/bin/bashcheckurl () {timeout=5fails=0success= 0while true  do    wget --timeout= $timeout  --tries=1 http:// WWW.BAID1U.COM -Q -O /DEV/NULL    IF [ $? -NE 0 ]       then        let fails=fails+1     else        let success+=1     fi    if [  $success  -ge 1 ];then         echo success        exit 0     fi    if [  $fails  -ge 2 ];then         echo fail        exit  2   &nbSp;fidone}checkurl 

Test, intentionally Baidu's URL is wrong

[[Email protected] ~]# sh checkurl.sh fail

This article is from the "Knowledge Change Destiny" blog, please be sure to keep this source http://ahtornado.blog.51cto.com/4826737/1928317

Shell implements monitoring Web service status