apm - Advanced Power Management control program
zzz [-Sz] [-f sockname]
apm [-ablmsSvz] [-f sockname]
apm communicates with the Advanced Power Management daemon,
requests of it for current power status or to place the
system into a
suspend or stand-by state. With no flags, apm displays the
management state in verbose form.
The options are as follows:
-a Display the external charger (A/C status). 0 means
1 means connected, 2 means backup power source, and
255 means unknown.
-b Display the battery status. 0 means high, 1 means
low, 2 means
critical, 3 means charging, 4 means absent, and 255
Set the name of the socket via which to contact apmd(8) to
-l Display the estimated battery lifetime (in percent).
-m Display the estimated battery lifetime (in minutes).
-S Put the system into stand-by (light sleep) mode.
-s Display if power management is enabled.
-v Request more verbose description of the displayed
-z Put the system into suspend (deep sleep) mode.
The zzz variant on this command is an alternative for suspending the system.
With no arguments, zzz places the system into suspend
command line flags serve the same purpose as for the apm
variant of this
This command does not wait for positive confirmation that
mode has been entered; to do so would mean the command does
until the system resumes from its sleep state.
/var/run/apmdev default Unix domain socket for communicating with
The -f flag may be used to specify an alternate socket name.
modes on this socket govern which users may access the
Advanced Power Management (APM) BIOS Interface Specification
1.2), Intel Corporation and Microsoft Corporation
The apm command appeared in NetBSD 1.3, OpenBSD support was
OpenBSD 3.6 March 18, 1996
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