SYNOPSIS
       on_ac_power

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

OPTIONS
       None.

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

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

AUTHOR
       This manual page was written by  Steve  Dodd  <steved@loth.demon.co.uk>
       and was updated by Thomas Hood.