Shutdown and power off
 

Some PCs will auto power off when clicked "shut down" from MS Windows.

Is there a similar thing for a Linux server ?

Does a command such as
shutdown -h now
include power off too ?

Or is there another command that I am not aware of ?

Besides there is another shutdown command call "halt". Which is the safest shutdown command ?

Thanks.

I always use shutdown -h now and it has always work fine for me. Don't see where it should make of a difference in server environment.

I always use "halt -p" it shuts down and powers off my pc very fast.

There are different commands and different switches for them.
Issue and read "man shutdown" and "man halt" in a terminal.

Your Linux distribution (what is it?) may or may not have a
script, such as ours has, to shutdown your box.

I could be wrong, but I believe the automatic power off is an ACPI feature and so requires the ACPI button module enabled in the kernel. Mine never powered itself off until I included that module in my kernel.