On Fri 04 Feb 2011 at 15:13:18 +0100, Pol Hallen wrote: > How is the best way to deny and allow by time and date of user/s > poweroff/reboot system? > > This client runs from 08am to 8pm. I have to deny all users reboot or poweroff > within time, but user/s can reboot or poweroff this system from 8.01pm to > 7.59am. Have cron add and remove users in /etc/shutdown.allow at the desired times. Possibly comment out the CTRL-ALT-DEL line in /etc/inittab.