Snapper on Ubuntu

1. Run ./setup.sh once for installation of snapper and configurations.
2. Run ./rollback.sh instead of sudo snapper rollback that is extremely buggy.
3. Other snapper commands such as sudo snapper list still remain useful.

rollback.sh

• ./rollback.sh # replaces sudo snapper rollback # where # is your snapshot ID you may find on sudo snapper list.
• ./rollback.sh installs itself in /usr/local/bin/rollback so that it can also be run as rollback thereafter.

setup.sh

• Separates the root subvolume (@) from the snapshot tree, tunes /etc/fstab (noatime, compress=zstd, separate /.snapshots mount), and installs/configures snapper (timeline + apt hooks, automatic cleanup).
• rollback.sh depends on the resulting @ + /.snapshots layout.

setup-swapfile.sh

• Creates a Snapper-compatible Btrfs swapfile under /@swap/ subvolume and edit /etc/fstab accordingly.