Dear Everyone

I am using RedHat 9, GRUB boot loader.

I have two questions.

First question. I would like to know how one can boot to single-user mode. I know that I can use "init 1", or "telinit 1" to transfer to single-user mode. Is this the only way? When I was using Solaris I used something like "reboot -- -s" to reboot to single user mode. I have read the man page but could not find any way to reboot to single-user mode. Is there any way to interact with GRUB to boot to single-user mode?

Second question. When I log in GNOME as a normal user, I can still shutdown the system or reboot the system using the menu in the GNOME X-window interface. To prevent this I change the permission of shutdown, halt commands in /sbin. Now I cannot shutdown the system if I am logon as a normal user. But I still can shutdown the system from the logon window using the menu given below on the logon window. Isn't this a security problem?

to enter single user mode from grub press e to edit grub kernel arguement and add 'single' and press b to boot.

Booting into Single-User Mode
http://www.redhat.com/docs/manuals/l...ng-single.html

As for the shutdown question, you can take a look at the MAN page for the shutdown command.