PMSET(1) BSD General Commands Manual PMSET(1)NAMEpmset — modify power management settings
SYNOPSISpmset [-a | -b | -c] [dim minutes] [spindown minutes] [sleep minutes]
[womp 1/0] [ring 1/0] [autorestart 1/0] [dps 1/0] [reduce 1/0]
[powerbutton 1/0] [lidwake 1/0] [acwake 1/0] [boot]
pmset-g [disk | live | cap | sched]
DESCRIPTIONpmset changes and reads power management settings such as idle sleep tim‐
ing, wake on administrative access, automatic restart on power loss, etc.
The -a, -b, -c flags determine whether the settings apply to battery
(-b), charger (wall power) (-c), or all (-a).
Use a minutes argument of 0 to set the idle time to never.
pmset must be run as root.
The boot argument tells power management that system bootup is complete.
Loginwindow handles this on a normal Mac OS X system.
The -g flag outputs the settings currently in use (same as -g live ). -g
disk will tell you the settings on disk. -g cap will tell you which
power management features the machine supports. -g sched will show
scheduled startup/wake and shutdown/sleep events.
dim - display dim timer (value in minutes)
spindown - disk spindown timer (value in minutes)
sleep - system sleep timer (value in minutes)
womp - wake on ethernet magic packet (value = 0/1)
ring - wake on modem ring (value = 0/1)
autorestart - automatic restart on power loss (value = 0/1)
dps - dynamically change processor speed based on load (value = 0/1)
reduce - reduce processor speed (value = 0/1)
powerbutton - sleep the machine when power button is pressed (value =
lidwake - wake the machine when the laptop lid(or clamshell) is opened
(value = 0/1)
acwake - wake the machine when power source (AC/battery) is changed
(value = 0/1)
These arguments don't directly affect power management settings:
boot - tell the kernel that system boot is complete
EXAMPLESpmset-b dim 5
pmset-a dim 10 spindown 10 sleep 30 womp 1
All changes made through pmset are saved in a persistent preferences file
(per-system, not per-user) at
pmset modifies the same file that System Preferences Energy Saver modi‐
Darwin August 19, 2002 Darwin