NetBSD/etc/powerd/scripts/power_button

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#!/bin/sh -
#
# $NetBSD: power_button,v 1.3 2003/11/01 23:04:54 mycroft Exp $
#
# Generic script for power button events. We simply attempt to
# shut the system down gracefully, and let the kernel handle
# the poweroff.
#
# Arguments passed by powerd(8):
#
# device event
case "${2}" in
pressed)
/sbin/shutdown -p now "power button pressed"
exit 0
;;
*)
logger -p warning "${0}: unsupported event ${2} on device ${1}" >&1
exit 1
;;
esac