Earlier quoted context omitted.
Does it automatically run when I leave my phone on the charger for the night?
It can if you charge from your PC and set up some very convoluted scripts (not recommended). I use `adb backup` solely as a means of transferring my settings & app library between devices. These are full system backups including potentially gigabytes of APKs, so I wouldn't want to run it every night. It is possible to use `adb backup` to only backup settings (no app files) if you want a lighter backup, but those back…
This is what I like about iOS. I tested this method a couple of times (with less destruction though), and it just works.