UPSSHUTDOWN(8)

NAME
upsshutdown - UPS emergency low power shutdown script

DESCRIPTION
upsshutdown is a script that runs automatically when the system performs an emergency UPS low power shutdown. The script is run before shutdown(8) is invoked. upsshutdown only runs if one of the three shutdown rules is enabled and true: "percentage remaining," "time remaining," or "time since loss of power." These settings can be changed using pmset(1) or Energy Saver in System Preferences.

The system administrator may modify upsshutdown. The script should only contain commands that must run in the case of an emergency UPS shutdown. It should not contain any commands that would otherwise be executed during a normal shutdown since the normal shutdown procedure follows invocation of upsshutdown.

LOCATION
/usr/libexec/upsshutdown

SEE ALSO
pmset(1), ioupsd(8)