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.\" Copyright (c) 1996 John T. Kohl
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. The name of the author may not be used to endorse or promote products
.\" derived from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $Id: apm.8,v 1.5 1998/11/08 00:21:26 aaron Exp $
.\"
.Dd March 18, 1996
.Dt APM 8
.Os OpenBSD
.Sh NAME
.Nm apm
.Nd Advanced Power Management control program
.Sh SYNOPSIS
.Nm zzz
.Op Fl S
.Op Fl z
.Op Fl f Ar sockname
.Br
.Nm apm
.Op Fl z
.Op Fl S
.Op Fl s
.Op Fl l
.Op Fl m
.Op Fl b
.Op Fl a
.Op Fl v
.Op Fl f Ar sockname
.Sh DESCRIPTION
.Nm
communicates with the Advanced Power Management daemon,
.Xr apmd 8 ,
making requests of it for current power status or to place the system
into a suspend or stand-by state.
With no flags,
.Nm
displays the current power management state in verbose form.
.Pp
Available options are as follows:
.Pp
.Bl -tag -width indent
.It Fl z
Put the system into suspend (deep sleep) mode.
.It Fl S
Put the system into stand-by (light sleep) mode.
.It Fl l
Display the estimated battery lifetime (in percent).
.It Fl m
Display the estimated battery lifetime (in minutes).
.It Fl b
Display the battery status. 0 means high, 1 means low, 2 means
critical, 3 means charging, 4 means absent, and 255 means unknown.
.It Fl a
Display the external charger (A/C status). 0 means disconnected, 1
means connected, 2 means backup power source, and 255 means unknown.
.It Fl v
Request more verbose description of the displayed states.
.It Fl f Ar sockname
Set the name of the socket via which to contact
.Xr apmd 8
to
.Pa sockname .
.El
.Pp
The
.Nm zzz
variant on this command is an alternative for suspending the system.
With no arguments,
.Nm
places the system into suspend mode.
The command line flags serve the same purpose as for the
.Nm apm
variant of this command.
.Pp
This command does not wait for positive confirmation that the requested
mode has been entered; to do so would mean the command does not return
until the system resumes from its sleep state.
.Sh FILES
.Bl -tag -width /var/run/apmdev -compact
.It Pa /var/run/apmdev
default Unix domain socket used for communication with
.Xr apm 8
.El
.Pp
The
.Fl f
flag may be used to specify an alternate socket name.
The protection modes on this socket govern which users may access the
APM functions.
.Sh SEE ALSO
.Xr apm 4 ,
.Xr apmd 8
.Sh REFERENCES
Advanced Power Management (APM) BIOS Interface Specification (revision
1.1), Intel Corporation and Microsoft Corporation
.Sh HISTORY
The
.Nm apm
command appeared in
.Ox 1.2 .
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