NAME

       powernap  -  have  the  system  "take  a  power  nap";  this  can  be  a  user  defined  ACTION_METHOD in
       /etc/powernap/config among [best-effort, suspend, hibernate, poweroff, powersave]

DESCRIPTION

       powernap will run when powernapd(8) has determined that an action needs to  be  taken  according  to  its
       configured  parameters.  The  action  to  be taken, among [best-effort, suspend, hibernate, poweroff], is
       determined in /etc/powernap/config. By default, the action will be best-effort.

       When the ACTION_METHOD is best-effort, and if the  file  /etc/powernap/action  is  executable,  then  the
       powernap binary will run it when called. Otherwise, powernap will run one of:
         * pm-suspend
         * pm-hibernate
         * poweroff depending on your hardware's capabilities, as determined by pm-is-supported(1).

       You may do one of:
         1) Write your own custom at /etc/powernap/action and make it executable
         2) Replace /etc/powernap/action with an executable script or binary
         3) Symlink /etc/powernap/action to some other executable script or binary

       When ACTION_METHOD is powersave, then powernap binary will execute pm-suspend.

       When ACTION_METHOD is powersave, then powernap binary will execute pm-hibernate.

       When ACTION_METHOD is powersave, then powernap binary will execute poweroff.

       When  ACTION_METHOD  is  powersave,  then  powernap binary will execute pm-powersave and pass an argument
       (true) to execute all the available  scripts  at  /usr/lib/pm-utils/power.d/  and  /etc/pm/power.d/.  The
       latter will contain scripts shipped with powernap.

       http://launchpad.net/powernap

FILES

       /etc/powernap/action, /proc/acpi/sleep

SEE ALSO

       powernapd(8), pm-is-supported(1), ethtool(8)

AUTHOR

       This  manpage  and the utility was written by Dustin Kirkland <kirkland@canonical.com> for Ubuntu systems
       (but may be used by others).  Permission is granted to copy, distribute and/or modify this document under
       the terms of the GNU General Public License, Version 3 published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-
       licenses/GPL.

powernap                                           2 Jul 2009                                        powernap(8)