How To Use acpid Command In Linux - Servo Node

How To Use acpid Command In Linux - Servo Node

acpid command basically offer users to deal with intelligent power management on a system and allows them to query batter and other configuration status by ....

acpid command basically offer users to deal with intelligent power management on a system and allows them to query batter and other configuration status by supporting ACPI. Basically, this command is designed to notify user-space programs of ACPI events.

Technically, acpid should be started just after the system boot. It runs in system background as a process by default. When this command runs, it open and reads a file saved at /proc/acpi/event which represents ACPI events. Means, in case if the file is found as non-existing, the acpid will try to connect to Linux kernel through input layer and netlink.

In such instances, if the command finds an ACPI event, it will examine the list of rules and execute the rules as well that matches to event. Also, acpid will ignore all incoming ACPI events as well if it finds a lock file within /var/lock/acpid directory.

acpid uses simple configuration files to define the rules. This configuration file are actually saved within /etc/acpi/events by default. The command will look for this directory, and all files which are prefixed with “.” and suffixed by “~” will be parsed. Also, if it finds any lines in file starting with “#”, will be considered as comment and will be ignored.

In order to install acpid, the users can run the following command:

sudo apt-get install acpid

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