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Why this exists A backup you have never restored is a hope, not a backup. A trustworthy script does four things: creates the archive atomically, checks that it is readable, records a checksum, and removes old copies so…
Backups with tar and rsync: Verification and Rotation
Create a timestamped compressed backup, verify it, write a checksum, keep only the newest N copies, and take space-efficient rsync snapshots using hard links.
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