Chattr-Crontab加锁

Chattr-Crontab加锁

linux安全加固，利用chattr命令对文件加锁，防止非法修改crontab

## crontab加锁
for a in `ls /var/spool/cron/`; do chattr +i /var/spool/cron/$a; done

## 查看锁
lsattr /var/spool/cron/*

## 解锁
for a in `ls /var/spool/cron/`; do chattr -i /var/spool/cron/$a; done