-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.
+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.
+