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APM(1) APM(1)


apm - interface with the APM subsystem


apm [ -VvmMsSdin ]


This command requires the Advanced Power Management subsystem. If run without arguments it reads /proc/apm and presents the output in a human-readable format.

Given a -S or -s option it requests that the machine be put into the APM standby or the APM suspend state, respectively. For a brief description of these states, see apmd(8).


Print the version of the program and exit.
Also print version information for the APM subsystem. The APM subsystem consists of power-management hardware, firmware usually referred to as the APM BIOS and a driver in the operating system kernel.
Print the time remaining as a number of minutes. The default is to print the time remaining in "hours:minutes" format.
Continuously monitor and update the status information. Assumes that the standard output is a terminal.
Request that the machine be put into the APM standby state.
Request that the machine be put into the APM suspend state.
Print APM status information in a format more useful for debugging. Implies -v.




This program was written by Rik Faith ( and may be freely distributed under the terms of the GNU General Public License. There is ABSOLUTELY NO WARRANTY for this program. The current maintainer is Avery Pennarun (


xapm(1), apmd(8).

January 2004