Hi, as user I have the permission to run systemctl reboot _without_ sudo. $ groups wheel games video audio optical storage power users vboxusers rocketmouse $ sudo cat /etc/sudoers | grep -v "#" | grep " " root ALL=(ALL) ALL rocketmouse ALL=(ALL) ALL 1. How can I disable it? 2. Since I'm the only user I could live with it, but I anyway want to be ask for a password, before I run the command by a menu entry. Is anything speaking against running gksudo systemctl reboot ? Is anything speaking against running gksudo -u some_user reboot ? I don't think so, but I want to ensure that I don't miss something. Again, I can execute it successfully without gksudo, I want to add gksudo, because I want to be asked for the password. Regards, Ralf