I use rsync normally but I want something similar for my Android (GrapheneOS) smartphone. I want to just click and backup everything that I set up earlier. For now I manually copy folders to one and then upload it to external drive. What are your recommendations?
I see there are several backup apps on F-droid but idk what they do. I think you can connect a launch button to a termux script that does the backup. That seems simplest to me, ymmv.