Script to check if the file has been tampered

1. The script content is as follows

#!/bin/bash
#获取校验库,只需要在首次执行的时候获取!
#file=$(find /var/www/html/ -type f)
#echo  > md5.txt
#for i in $file
#do
#   md5sum $i >> md5.txt
#done

#通过检查校验库文件的MD5值，有更改时发送邮件通知
md5sum -c md5.txt
if [ $? -ne 0 ];then
    echo "有更改"
    message=$(md5sum -c md5.txt|grep "FAILED")
    mail.py [email protected]  "警告"  "$message"
fi

2. Modify the /var/www/html/index.php file and execute the script

[root@host-134 ~]# sh check_md5.sh 

3. The alarm is successful