Power Management is a feature that turns off the power or switches system’s components to a low-power state when inactive, which is located at the corner of the screen.

You can also run those services through Konsole also. So, This is the guide for those commands.

Poweroff and Reboot

If you want to shut down your system you can follow the command below:

poweroff    

Reboot is referring to restart your system. After you run it, it immediately resets your system.

reboot  

Hibernate and Suspend

systemd provides commands to suspend to RAM or hibernate using the kernel’s native suspend/resume functionality. There are also mechanisms to add hooks to customize pre- and post-suspend actions.

To cut power to unneeded systems while RAM still has enough power to run, type the command below

systemctl suspend

Powers down the computer while retaining its state, which saves all contents access memory to HARD DISK. You can run the following line:

systemctl hibernate