Originally Posted by cuff21
My guess is that it does exactly what Renate NST is telling you to do - send a shutdown intent - behind the scenes.
Hmm, I don't know. A regular root and su won't work.
You'd either have to have a system-signed app or hack the permission system.
There is no clear info on the difference between an Android shutdown and a Linux shutdown.
Given the choice, I'd go for the Android shutdown.