Use snapper snapshots to backup to external drive

This bash script sends incremental snapshots to another drive for backing up data. Plug in and mount any btrfs-formatted device you want your system to be backed up to (like a USB drive). When you run the script you will be prompted to select a mounted btrfs device, or you can optionally select the disk using its UUID on the command line.

This is a companion discussion topic for the original entry at

Would you be able to add support for aarch64?

I added builds for those now, though I would’ve thought they wouldn’t be necessary since this is a noarch package (just a bash script).