Linux Commands Examples

A great documentation place for Linux commands


test whether computer is running on AC power



add an example, a script, a trick and tips

: email address (won't be displayed)
: name

Step 2

Thanks for this example ! - It will be moderated and published shortly.

Feel free to post other examples
Oops ! There is a tiny cockup. A damn 404 cockup. Please contact the loosy team who maintains and develops this wonderful site by clicking in the mighty feedback button on the side of the page. Say what happened. Thanks!


no example yet ...

... Feel free to add your own example above to help other Linux-lovers !


on_ac_power checks whether the system is running on AC power (i.e., mains power) as opposed to battery power.



exit status

0 (true)

System is on mains power

1 (false)

System is not on mains power

255 (false)

Power status could not be determined


/proc/apm APM status information file
ACPI status information directory


This manual page was written by Steve Dodd <steved[:at:][:dot:]uk> and was updated by Thomas Hood.

How can this site be more helpful to YOU ?

give  feedback