.\"	$OpenBSD: apm.8,v 1.41 2015/01/28 05:10:44 tedu Exp $
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.\" Copyright (c) 1996 John T. Kohl
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.Dd $Mdocdate: January 28 2015 $
.Dt APM 8
.Os
.Sh NAME
.Nm apm ,
.Nm zzz ,
.Nm ZZZ
.Nd Advanced Power Management control program
.Sh SYNOPSIS
.Nm apm
.Op Fl AabHLlmPSvZz
.Op Fl f Ar sockname
.Nm zzz
.Op Fl SZz
.Op Fl f Ar sockname
.Nm ZZZ
.Op Fl SZz
.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
The options are as follows:
.Bl -tag -width Ds
.It Fl A
Switch to automatic performance adjustment mode.
.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 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 f Ar sockname
Set the name of the socket via which to contact
.Xr apmd 8
to
.Ar sockname .
.It Fl H
Set
.Va hw.setperf
to 100.
.It Fl L
Set
.Va hw.setperf
to 0.
.It Fl l
Display the estimated battery lifetime (in percent).
.It Fl m
Display the estimated battery lifetime (in minutes).
.It Fl P
Display the performance adjustment mode.
0 means manual mode.
1 means automatic mode.
.It Fl S
Put the system into stand-by (light sleep) state.
.It Fl v
Request more verbose description of the displayed states.
.It Fl Z
Put the system into hibernation.
System memory is saved to disk (swap space)
and the machine is powered down.
.It Fl z
Put the system into suspend (deep sleep) state.
.El
.Pp
The
.Nm zzz
and
.Nm ZZZ
commands are shortcuts for suspending and hibernating the system,
respectively.
With no arguments,
they are placed into their respective states.
The command line flags serve the same purpose as for
.Nm .
.Pp
These commands do not wait for positive confirmation that the requested
state 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
The
default
.Ux Ns -domain
socket for communicating with
.Xr apmd 8 .
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.
.El
.Sh SEE ALSO
.Xr apm 4 ,
.Xr apmd 8
.Pp
Advanced Power Management (APM) BIOS Interface Specification
(revision 1.2),
Intel Corporation and Microsoft Corporation
.Sh HISTORY
The
.Nm
command appeared in
.Nx 1.3 ;
.Ox
support was added in
.Ox 1.2 .