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| BATTMOND(1) | FreeBSD General Commands Manual | BATTMOND(1) |
NAME
battmond —
SYNOPSIS
battmond |
[-d device]
[-i interval]
[-W warning]
[-H halt]
[-z] [-h] |
DESCRIPTION
battmond monitors the battery level on your ACPI-enabled
(laptop) computer. Battmond probes your battery level in predefined intervals.
When the battery level is running low it writes a warning message to the
syslog. On critical level, it powers the computer down. Both levels and the
probe interval can be configured on the command line.
battmond probes the battery level through
the ACPIIO_BATT_GET_BATTINFO ioctl(2) on /dev/acpi.
-d option allows for defining a different device,
although you shouldn't (probably) need it. Probes are performed in regular
intervals of 10 seconds. This value can be tweaked through the
-i option. When the computer is on battery (i.e.
there is a battery present and no power cord is connected),
battmond checks the battery level against two
values: the warning and the halt
threshold. If the battery level goes below the former, a warning is sent to
the syslog with a priority of LOG_ALERT. If it goes below the latter,
battmond initiates a system shutdown, through a call
to /sbin/halt. The warning and halt thresholds can be tuned using the
-W and -H options
respectively. Values are expressed in percentage of maximum charge, with
default values being 10 (%) for the warning message and 5 (%) for the system
halt. Using the -z option will switch the behaviour
of the program to suspend the computer instead of shutting it down. Finally,
-h prints a brief help message to the stderr and
terminates the program.
SEE ALSO
acpi(1), acpiconf(8), ioctl(2)AUTHOR
Nikos Ntarmos <ntarmos@gmail.com>| September 20, 2019 | FreeBSD 13.1-RELEASE |
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