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zbackup is a globally-deduplicating backup tool, based on the ideas found in rsync.
Feed a large .tar into it, and it will store duplicate regions of it only once,
then compress and optionally encrypt the result. Feed another .tar file,
and it will also re-use any data found in any previous backups.
This way only new changes are stored, and as long as the files are not very different,
the amount of storage required is very low. Any of the backup files stored previously
can be read back in full at any time.
Base for ebuild from https://github.com/SpiderX/portage-overlay/tree/master/app-backup/zbackup
Gentoo-Bug: https://bugs.gentoo.org/576796
Package-Manager: Portage-2.3.3, Repoman-2.3.1
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Vladimir Pavljuchenkov (SpiderX)
GitWeb