shutdown and startup by comamnd or other way but no GUI

[Nutul]

Hi.

Is there a way to shutdown moode on my rpi by command from other host? 
And beside of it, is there a way to startup it in same way?

iam using home assistant and tring to control many things inside it.

although you could eventually shut it down, since then it would be powered off, I cannot see a way to send it any command