

https://forums.linuxmint.com/viewtopic.php?p=1552802&sid=b71206a65b47e7f0f57ee4e526031e3d#p1552802
I personally use syncthing and sync it to a nas (with btrfs snapshots), I used to send it to a raspberry pi
A long time a go I’ve used LuckyBackup a gui over rsync to copy and overwrite to an external disk.
Creating a new legal framework with examples to copy and compare is a lot easier than improving an existing one.