How to make backups in ubuntu so that you can return to the version?

Question

ubuntu

How to make backups in ubuntu so that you can return to the version?

Answer 1

if so directly, quickly and without hesitation, then save the image of the partition with the root in backup through the clone.
but in general, there are a lot of options ...
it all depends on the needs, knowledge and installed software / parameters.
in btrfs zfs you can stamp multiple subvolumes and jump between them, etc.