Allow users to shutdown

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Revision as of 10:46, 8 December 2012 by Myle (talk | contribs) (Using sudo: link to aliases)
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zh-CN:Allow Users to Shutdown

Using systemd-logind

If you're using systemd (which is default in Arch Linux), users with non-remote session can issue power-related commands as long as polkit is installed and the session is not broken.

To shutdown:

# systemctl poweroff

The suspend, poweroff and hibernate button presses and lid close events are also handled by logind (see man logind.conf.

Using sudo

First install sudo:

# pacman -S sudo

Then, as root, add the following to the end of /etc/sudoers using the visudo command. Substitute user for your username and hostname for the machine's hostname.

user hostname =NOPASSWD: /sbin/shutdown -h now,/sbin/halt,/sbin/poweroff,/sbin/reboot

Now your user can shutdown with sudo shutdown -h now, and reboot with sudo reboot. Users wishing to power down a system can also use poweroff or halt. Use the NOPASSWD: tag only if you do not want to be prompted for your password.

For convenience, you can add these Bash#Aliases to your user's ~/.bashrc if you have it enabled (or to /etc/bash.bashrc for system-wide settings):

alias reboot="sudo reboot"
alias poweroff="sudo poweroff"
alias halt="sudo halt"

Using acpid

acpid can be used to allow anyone with physical access to cleanly shut down the computer by using this power button.