pmset

Power management settings

SYNTAX

   List current settings (Get)
       pmset -g [disk | live | cap | sched | ups]

   Edit Settings
       pmset [-a | -b | -c | -u] option [option option...]
 
       pmset -u UPS_Option [UPS_Option...]

   Key:
      -g       - Get the settings currently in use
      -g live  - Get the settings currently in use  
      -g disk  - Get the disk settings 
      -g cap   - List power management capabilities.
      -g sched - Get the scheduled startup/wake and shutdown/sleep events.
      -g ups   - Get all UPS-specific settings.

      -c adjust settings used while connected to a charger
      -b adjust settings used when running off a battery
      -u adjust settings used while running off a UPS
      -a (default) adjust settings for both

   Options:
     acwake 1/0       - wake when power source (AC/battery) is changed (0 = dont wake)
     ams 1/0          - AppleMotionSensor park disk on sudden G force (0 = dont park)
     autorestart 1/0  - automatic restart on power loss (0 = dont restart)
     boot             - tell power management that system bootup is complete.
                        (Loginwindow handles this on a normal Mac OS X system)
     dim minutes      - display dim timer (value in minutes)
     dps 1/0          - dynamically change processor speed based on load (value = 0/1)
     hibernatemode minutes - Hibernate on low power, OS X Tiger (0/3/7)
     lidwake 1/0      - wake when the laptop lid is opened (0 = dont wake)
     powerbutton 1/0  - sleep when power button is pressed (0 = dont sleep)
     reduce 1/0       - reduce processor speed (value = 0/1)
     ring 1/0         - wake on modem ring (0 = dont wake)
     spindown minutes - disk spindown timer (value in minutes)
     sleep minutes    - system sleep timer (value in minutes)
     womp 1/0         - wake on ethernet magic packet (0 = dont wake)

  UPS_Options (when draining UPS battery):
     haltlevel percent - Battery level at which to trigger an emergency shutdown 
     haltafter minutes - Trigger emergency shutdown after this long running on UPS power 
     haltremain minutes]- Trigger emergency shutdown when this much time remaining on UPS power

A minutes argument of 0 = never.

pmset must be run as root.

Examples

pmset -b dim 5

pmset -c dim 5 sleep 15 spindown 10 autorestart 1 womp 1

sudo pmset -a hibernatemode 0

sudo pmset -a hibernatemode 3

"Work like you don't need the money, love like you've never been hurt, and dance like nobodys watching" - Satchel 'Satchmo' Paige

Related commands:

/var/vm/sleepimage
How to safe sleep your mac