1. When to use it
Useful for controlled migrations, disk replacement, or preparing a secondary root.
rsync | clone system | numeric-ids | target root | migration
2. Base setup
rsync -aAXH --numeric-ids --exclude='/proc/*' --exclude='/sys/*' --exclude='/dev/*' / /mnt/target
cp -a /etc/fstab /mnt/target/etc/fstab
mount --bind /dev /mnt/target/dev
Adjust host names, IPs, interfaces, paths, and versions to the real system before making the change persistent.
3. Quick verification
rsync --dry-run -aAXH --delete / /mnt/target | head
ls /mnt/target/boot
grep -n . /mnt/target/etc/fstab | head
Confirm that the output matches the expected state before considering the intervention complete.
4. Operational notes
Copying files is not enough: after the clone you still need to adapt bootloader, fstab, and references to new UUIDs.
Quick checklist
[ ] Steps completed\n[ ] Config updated\n[ ] Tests executed\n[ ] Rollback ready\n[ ] Logs checked