September 7th 2017
I'm not the one to promote android apps usually, but here is a nice that does exactly what I desire, and follows some sort of Unix
June 9th 2018
This is an older (kitkat) device which I wanted to factory-reset before selling it, but alas, it wouldn't boot anymore after that.
January 22nd 2018
This is not a complete step-by-step HowTo.
You will have to look at each of the linked articles and make your own choices depending on your device,
June 18th 2017
These are my experiences on a rooted Acer E39 (a.k.a liquid E700) with Android 4.4.2 (kitkat).
I hope they apply to other models & Android