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Build trustworthy, automated Linux backups with simple Bash and composable tools: rsync for fast hard-linked local snapshots, restic for encrypted, deduplicated offsite copies, inotify for event-driven micro-backups, and systemd timers for resilient scheduling. The guide provides install steps, copy-paste scripts, include/exclude rules, retention, verification, restore drills, and monitoring to meet 3-2-1 and low RPO/RTO.