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83 lines
1.9 KiB
Plaintext
83 lines
1.9 KiB
Plaintext
.\" LP (Laptop Package)
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.\"
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.\" Copyright (c) 1994 by Tatsumi Hosokawa <[email protected]>
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.\"
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.\" This software may be used, modified, copied, and distributed, in
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.\" both source and binary form provided that the above copyright and
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.\" these terms are retained. Under no circumstances is the author
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.\" responsible for the proper functioning of this software, nor does
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.\" the author assume any responsibility for damages incurred with its
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.\" use.
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.\"
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.Dd September 30, 2026
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.Dt APM 8 i386
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.Os
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.Sh NAME
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.Nm apm
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.Nd display power management status
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.Sh SYNOPSIS
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.Nm
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.Op Fl abltzZ
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.Sh DESCRIPTION
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The
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.Nm
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utility reports power management status.
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl a
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Display the current AC-line status as an integer value.
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The values
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0, 1 and 2 correspond to the
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.Dq off-line
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state,
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.Dq on-line
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state or
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.Dq backup power
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state, respectively.
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.It Fl b
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Display an integer value reflecting the current battery status.
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The values 0, 1, 2, 3, correspond to the
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.Dq high
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status,
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.Dq low
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status,
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.Dq critical
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status,
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.Dq charging
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status respectively.
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.It Fl l
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Display the remaining battery percentage.
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If your laptop does not
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support this function, 255 is displayed.
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.It Fl t
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Display the estimated remaining battery lifetime in seconds.
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If
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it is unknown, -1 is displayed.
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.It Fl Z
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Transition the system into standby mode.
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This mode uses less power than
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full power mode, but more than suspend mode.
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.It Fl z
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Suspend the system.
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.El
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.Pp
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If no options are specified,
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.Nm
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displays information and current status of APM in verbose mode.
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If multiple display options are given, the values are displayed one
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per line in the order given here.
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.Sh SEE ALSO
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.Xr acpi 4 ,
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.Xr apm 4 ,
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.Xr acpiconf 8 ,
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.Xr zzz 8
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.Sh HISTORY
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The
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.Nm
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utility originally controlled the Advanced Power Management (APM) BIOS
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extension on i386,
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now it interfaces with ACPI.
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.Sh AUTHORS
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.An Tatsumi Hosokawa Aq Mt [email protected]
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