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.\" $OpenBSD: acpid.8,v 1.2 2005/06/03 22:29:48 jmc Exp $
.\"
.\" Copyright (c) 2005 Thorsten Lockert <tholo@sigmasoft.com>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd May 27, 2005
.Dt ACPID 8
.Os
.Sh NAME
.Nm acpid
.Nd Advanced Configuration and Power Interface daemon
.Sh SYNOPSIS
.Nm acpid
.Op Fl d
.Sh DESCRIPTION
.Nm
monitors the advanced configuration and power interface (ACPI) device,
acting on signaled events.
For suspend and poweroff request events delivered by the BIOS,
.Nm
runs the appropriate program (if one exists).
.Pp
If the
.Fl d
flag is specified,
.Nm
enters debug mode, logging to facility
.Dv LOG_LOCAL1
and staying in the foreground on the controlling terminal.
.Pp
Actions can be configured for the following two events:
.Cm suspend
and
.Cm powerdown .
The suspend actions are run when the sleep button is pressed, while
the powerdown action is run when the power button is pressed.
.Sh FILES
.Pa /etc/acpi/suspend
and
.Pa /etc/acpi/powerdown
are the files that contain the host's customized actions.
Each file must be an executable binary or shell script suitable
for execution by the
.Xr execve 2
function.
If you wish to have the same program or script control all transitions, it
may determine which transition is in progress by examining its
.Va argv[0] ,
which should be set to one of
.Ar suspend
and
.Ar powerdown .
.Pp
.Pa /dev/acpi
is the default device used to control the ACPI kernel driver.
.Sh SEE ALSO
.Xr execve 2 ,
.Xr syslog 3 ,
.Xr apm 4 ,
.Xr speaker 4 ,
.Xr apm 8 ,
.Xr apmd 8 ,
.Xr syslogd 8
.Sh REFERENCES
Advanced Configuration and Power Interface Specification (Revision 3.0),
Hewlett-Packard Corporation, Intel Corporation, Microsoft Corporation,
Phoenix Technologies Ltd and Toshiba Corporation.
.Sh HISTORY
The
.Nm
command appeared in
.Ox 3.8 .
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