Understanding Rsync Sends Incremental File List: Making Local Copy

Understanding rsync: Making a Local Copy

RSync is a powerful and versatile tool for synchronizing files and directories between two or more systems. This article will provide a detailed context on rsync, covering key concepts, subtopics, and proper formatting for code blocks.

Preparing the Remote Sync Server

Before sending files, the remote sync server must be prepared. Here's a step-by-step guide:

1. Install rsync on the remote server:

   sudo apt-get install rsync
   

2. Secure the connection by generating SSH keys:

   ssh-keygen -t rsa -b 4096 -C "[email protected]"
   

3. Copy the public key to the remote server:

   ssh-copy-id user@remote_server
   

Sending Files

After preparing the remote sync server, you can send files using the rsync command. Here's an example:

rsync -avz /path/to/local/files user@remote_server:/path/to/remote/directory

• -a: Archive mode (equivalent to -rlptgoD).
• -v: Verbose output.
• -z: Compress data during transfer.

Transfer Page

The transfer page shows the progress of the rsync operation. Here's an example:

sending incremental file list
./file1
./file2

sent 1,678 bytes  received 47 bytes  1,631.00 bytes/sec
total size is 1,678  speedup is 1.00

Excluding Files

You can exclude specific files or directories from the sync process using the --exclude option:

rsync -avz --exclude="*.txt" /path/to/local/files user@remote_server:/path/to/remote/directory

Schedules

To automate rsync operations, you can use cron jobs. Here's an example of a cron job that syncs files every hour:

0 * * * * rsync -avz /path/to/local/files user@remote_server:/path/to/remote/directory

Summary

• Rsync is a powerful tool for synchronizing files and directories between systems.
• Prepare the remote sync server by installing rsync and securing the connection with SSH keys.
• Send files using the rsync command, specifying local and remote paths.
• Use options like -a, -v, and -z for archive mode, verbose output, and data compression.
• Exclude specific files or directories using the --exclude option.
• Automate rsync operations using cron jobs.

References

• rsync Manual
• How to use rsync for backups
• Automating rsync with cron