How Do You Turn Off A PS4? Xbox Noob In Need Of Help

I unplug all my stuff at night to save power and I can never figure out how to completely turn off the ps4 before I unplug it, which can cause damage to it. I know you can turn it off with the controller, but I really need to know how to do it without the controller. Also I did try holding down the power button on the ps4 and that did not work either.
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