Novell LINUX ENTERPRISE DESKTOP 10 SP2 - DEPLOYMENT GUIDE 08-05-2008 Deployment Manual page 558

/proc/acpi/ac_adapter/AC/state
Shows whether the AC adapter is connected.
/proc/acpi/battery/BAT*/{alarm,info,state}
Detailed information about the battery state. The charge level is read by comparing
the last full capacity from info with the remaining capacity
from state. A more comfortable way to do this is to use one of the special pro-
grams introduced in
which a battery event (such as warning, low and critical) is triggered can be specified
in alarm.
/proc/acpi/button
This directory contains information about various switches, like the laptop lid and
buttons.
/proc/acpi/fan/FAN/state
Shows if the fan is currently active. Activate or deactivate the fan manually by
writing 0 (on) or 3 (off) into this file. However, both the ACPI code in the kernel
and the hardware (or the BIOS) overwrite this setting when the system gets too
warm.
/proc/acpi/processor/*
A separate subdirectory is kept for each CPU included in your system.
/proc/acpi/processor/*/info
Information about the energy saving options of the processor.
/proc/acpi/processor/*/power
Information about the current processor state. An asterisk next to C2 indicates that
the processor is idle. This is the most frequent state, as can be seen from the usage
value.
/proc/acpi/processor/*/throttling
Can be used to set the throttling of the processor clock. Usually, throttling is possible
in eight levels. This is independent of the frequency control of the CPU.
/proc/acpi/processor/*/limit
If the performance (outdated) and the throttling are automatically controlled by a
daemon, the maximum limits can be specified here. Some of the limits are deter-
mined by the system. Some can be adjusted by the user.
542 Deployment Guide
Section 28.3.3, "ACPI Tools" (page 546). The charge level at