I have a number of tagged and untagged snapshots. I would like automate forget/prune of untagged snapshots only.
At the moment it appears I cannot specify an “untagged” snapshot, either for listing snapshots, or forget. It’s either lists everything, or a selection of known tags.
Based on my reading, I would have to list all snapshots, collect all possible tag names, then add
--keep-tag=<tag list> to my forget command.
Is this correct? or an I doing something wrong?