Go back to Terminal application and type the following command
man pmset
A short excerpt of what maybe of interest.
Most caution the user, mucking around in the pmset has consequence if not do right
NAME
pmset – manipulate power management settings
SYNOPSIS
pmset [-a | -b | -c | -u] [setting value] [...]
pmset -u [haltlevel percent] [haltafter minutes] [haltremain minutes]
pmset -g [option]
pmset schedule [cancel | cancelall] type date+time [owner]
pmset repeat cancel
pmset repeat type weekdays time
pmset relative [wake | poweron] seconds
pmset [touch | sleepnow | displaysleepnow | boot]
DESCRIPTION
pmset manages power management settings such as idle sleep timing, wake on administrative access, automatic restart on
power loss, etc.
Note that processes may dynamically override these power management settings by using I/O Kit power assertions.
Whenever processes override any system power settings, pmset will list those processes and their power assertions in