control lock

[Ngoh Chean Siung]

Hi,

1) Is this command 'control lock' is used to disable user login including root? How about thru console login?

2) What is the command to clear the 'control lock' command?

regards.

[A. Clay Stephenson]

That is not a standard command. It sounds as though it is a custom script or program.

[Ngoh Chean Siung]

Hi,

Is there any command or any method to bar the users to login into the system?

regards

[A. Clay Stephenson]

There are many ways to do this but the preferred method is to make a "NOLOGIN=1" entry in /etc/default/security. If the file /etc/nologin exists, non-root users are not allowed to login.

If you are somehow locked out of the system as root, you will probably have to bring the system up in single-user mode. You will then be logged in as root on the console. You can reset root's passwd.