How to Use the rsync Command to Sync Files in Linux? (Examples Included)

rsync is a command-line tool for efficiently synchronizing files and directories. It only transmits differences and supports compression, SSH encryption and fine control. Common options include -a (archive), -v (verbose output), -z (compression), --delete (delete redundant files) and --dry-run (simulate run).

rsync is a fast, versatile, and widely-used command-line utility for synchronizing files and directories locally or over a network. It's efficient because it transfers only the differences between source and destination — not entire files — and supports compression, encryption (via SSH), and detailed control over what gets synced.

Basic rsync syntax and essential options

The general form is:

rsync [options] source destination

Commonly used options include:

• -a — archive mode: preserves permissions, ownership, timestamps, symlinks, and recursion
• -v — verbose output (shows what's being transferred)
• -z — compress data during transfer (helpful over slow connections)
• --delete — remove files from destination that no longer exist in source (use with caution)
• -n or --dry-run — simulate the sync without making changes (great for testing)

Sync files locally

To copy a directory and its contents to another location on the same machine:

rsync -av /home/user/docs/ /backup/docs/

Note the trailing slash on /home/user/docs/ : it means “copy the contents of docs”, not the folder itself. Omitting it would create /backup/docs/docs/ .

To sync and delete extraneous files in the destination:

rsync -av --delete /home/user/docs/ /backup/docs/

Sync files over SSH (remote backup)

rsync uses SSH by default for secure remote transfers. To sync local files to a remote server:

rsync -avz /local/folder/ user@server.com:/remote/backup/

To pull files from a remote server to your local machine:

rsync -avz user@server.com:/remote/data/ /local/copy/

If SSH uses a non-standard port, add -e "ssh -p 2222" before the source/destination.

Exclude files or directories

Use --exclude to skip unwanted items. For example:

rsync -av --exclude='*.tmp' --exclude='cache/' /source/ /dest/

You can also read exclusions from a file with --exclude-from=excludes.txt , where each line is a pattern.

Basically just these core patterns cover most daily use — keep it simple, test with --dry-run , and double-check paths before adding --delete . Not complex, but easy to misstep if rushed.

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