DE

↑ ↓ select, Enter open, Esc close

Verify a backup against the original using checksums

harmlessrsync and backupalle
Adjust the values, the command updates live
user@server
rsync -rcn --itemize-changes /var/www/vhosts/example.com/httpdocs/ /backup/example.com/httpdocs/

-c compares every file by checksum instead of size and timestamp, and -n makes sure nothing is transferred. Only files that differ in content (line starts with >fc) or are missing at the destination (>f+++++++++) are listed. If the output is empty, source and backup match in content. The destination can also be a remote path such as BENUTZER@HOST:PFAD/.

Note: All files are read completely on both sides, which takes a while for large amounts of data.

Also searched as

  • verify backup is complete
  • compare backup with original
  • rsync checksum compare
  • compare file contents over ssh

Related one-liners

All in rsync and backup

Incremental backup with hard links using rsync --link-dest

#rsync -a --link-dest=/backup/example.com/aktuell /var/www/vhosts/example.com/httpdocs/ /backup/example.com/$(date +%F)/ && ln -sfn /backup/example.com/$(date +%F) /backup/example.com/aktuell
cautionrsync and backup

Save checksums of all files in a directory

$cd /var/www/vhosts/example.com/httpdocs && find . -type f -exec sha256sum {} + > /tmp/example.com.sha256
cautionrsync and backup

Test rsync with a dry run

$rsync -av --dry-run /var/www/vhosts/example.com/httpdocs/ /backup/example.com/httpdocs/
harmlessrsync and backup

Transfer files to another server with rsync over SSH

$rsync -avz -e 'ssh -p 22' /var/www/vhosts/example.com/httpdocs/ webuser@backup.example.com:/home/webuser/backup/httpdocs/
cautionrsync and backup

Verify files against saved checksums

$cd /backup/example.com/httpdocs && sha256sum -c --quiet /tmp/example.com.sha256
harmlessrsync and backup

Copy a directory locally with all permissions and attributes

#rsync -aHAX --info=progress2 /var/www/vhosts/ /mnt/newdisk/vhosts/
cautionrsync and backup

Read first, then run.

The commands on myline.de act directly on servers, files and databases. A wrong path or placeholder can delete data irreversibly or make a server unreachable.

  • All commands are provided without warranty and are not tested on every system.
  • Understand what a command does before running it, and check every placeholder.
  • Make a backup first and, if possible, try it on a test system.
  • You run commands at your own risk. Liability for damages is excluded to the extent permitted by law.