Linux - Disable Shutdown For Normal Users

Very useful for servers/shared machines:

Disable Shutdown For Normal Users

Addendum:

Setting file mode for /etc/acpi/events/power.conf to "0000" is not sufficient to disable the power button. It's better to:

1. Uninstall gnome-power-manager


2. Leave file permissions for power.conf unchanged and simply set the action= line to an empty string

It is also advisable to set the local login screen style to plain in gdmsetup.