What one would have thought as being a simple run level change, to get to a text level in the main, doesn't work in Debian. It defaults to run level 2, which does not comply with convention and any attempt to transfer to a text mode, is met with resistance. This is particularly frustrating, if you want to install a Nvidia proprietary graphics driver, as this has to be installed with xserver not running.
How to disable Shutdown and Reboot for low level users in Ubuntu
I have a Linux machine used by my Wife and children and I wanted to remove the ability for them to shutdown or reboot the PC when they log off. I normally am in the process of downloading or have others things running in another session, shutting down terminates any process or applications that are running in other sessions.