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I use Debian and I want my power button to shutdown the PC. Currently it sleeps, when I press it.

Is there any command for it to make it shutdown?

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  • Some while ago I created this handy script: github.com/stackcoder/doublepress It can prevent accidental shutdowns by requiring double pressing the power button. It also allows switching between standby and poweroff, or triggers your custom action.
    – stackcoder
    Commented Jan 20, 2021 at 20:40

2 Answers 2

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For modern Debian versions with systemd (>=Debian 8.0 Jessie)

Make sure you have acpid installed:

apt-get -y install acpid

and edit /etc/systemd/logind.conf to uncomment:

HandlePowerKey=poweroff

See systemd logind.conf man page for more options.

For older Debian releases (<=Debian 7)

See Skippy's answer


Credits: Michls Tech Blog

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/etc/acpi/events/powerbtn-acpi-support leads to /etc/acpi/powerbtn-acpi-support.sh, which in turns calls for /etc/acpi/powerbtn.sh. I've not tested, but you may try to create this file and fill it with something like

#!/bin/bash

/sbin/shutdown -h now "Power button pressed"

Note that in principle it won't exit your session cleanly, though, so depending on the desktop environment / window manager you use you may want to improve it to handle things more cleanly (e.g. adding gnome-session-save --kill before if you use gnome).

The best way to go would probably be to google search for other users /etc/acpi/powerbtn.sh scripts.

Update

/etc/acpi is not used anymore (probably after Debian Wheezy), see /etc/systemd/logind.conf, more info in this answer.

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