Write and execute automatic execution scripts (to copy etc/*.conf files to the backup directory)
-----crontab -e
------:wq! Save and exit
------ crontab -l view the program being executed
------- systemctl restart crond restart the service (this step is the focus)
Write a loop execution command
-------while
> ls -alt
>do
>sleep 3 ------Run in the background
>done
The results of the automatic execution are as follows:
Prohibit specific users from compiling crontab self-executing commands
