Hi,
>(ur mail is below). in this
manner any person will reboot the sytem and via lilo prompt he will get a
system without password and can >change password..as u have written..
>so anyone can become root...in this situation what will happen to security of linux system ..
Though this is genuinely the case, we actually can do this, especially if linux is not configured properly. The only way to circumvent it is to change the configuration so that single is disabled, (how is that done, anyway?). On PCs, there is very little need in terms of security, except that we should be able to ward off virus attacks. This option is a boot option, so it is impossible for any virus writer to use this feature. This is a wonderful way for PCs, though it is still a serious threat to System Administrators, as they have to be aware, which many aren't. This option may not be available on a server install, I am not sure.
Regards,
Venky
