Summary of `rsync` Commands

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Key Insights

This text explains how to use the rsync command for synchronizing files between a local directory and a remote server. It details two main operations: uploading from local to remote and downloading from remote to local. Key rsync options include '-a' for archive mode, '-v' for verbose output, '-u' to sync only updated files, '-z' for compression, and '-e' to specify the SSH connection with a custom port. The upload command syncs the local '/root/ocr/' directory to the remote '/root/autodl-tmp/ocr/ocr/' directory, while the download command syncs from the remote directory back to the local one. A summary table compares the commands, directions, parameters, and descriptions for both operations.

1. Syncing from Local to Remote (Upload)

Command:

BASH

rsync -avuz /root/ocr/ root@connect.yza1.seetacloud.com:/root/autodl-tmp/ocr/ocr/

Parameter descriptions:

-a: Archive mode; recursively transfers files while preserving symbolic links, permissions, timestamps, etc.
-v: Show detailed output (optional).
-u: Only sync files that are newer in the source than in the destination.
-z: Compress data during transfer to reduce bandwidth usage.
/root/ocr/: Local source directory.
root@connect.yza1.seetacloud.com:/root/autodl-tmp/ocr/ocr/: Remote target directory.

Explanation

This syncs the contents of the local /root/ocr/ directory to /root/autodl-tmp/ocr/ocr/ on the remote server, copying only newer files with compression and detailed output.

2. Syncing from Remote to Local (Download)

Command:

BASH

rsync -auvz -e "ssh -p 22505" root@connect.yza1.seetacloud.com:/root/autodl-tmp/ocr/ocr/ /root/ocr/

Parameter descriptions:

-a: Archive mode; recurses and preserves file attributes.
-v: Show detailed output.
-u: Only sync files that are newer in the source than in the destination.
-z: Compress data during transfer.
-e "ssh -p 22505": Use the SSH protocol and connect via port 22505.
root@connect.yza1.seetacloud.com:/root/autodl-tmp/ocr/ocr/: Remote source directory.
/root/ocr/: Local target directory.

Explanation

This syncs files from /root/autodl-tmp/ocr/ocr/ on the remote server to the local /root/ocr/ directory, copying only newer files, connecting via the specified SSH port, and compressing the transferred data.

3. Common Options

-a: Archive mode (recursive transfer, preserve file attributes, etc.).
-v: Verbose output.
-u: Only sync newer files.
-z: Compress data.
-e: Specify the remote shell (e.g., an SSH connection).
--delete: Delete files in the destination directory that do not exist in the source directory (use with caution).

4. Summary

Operation	Syncing from Local to Remote	Syncing from Remote to Local
Command	`rsync -avuz /root/ocr/ root@...:/root/ocr/ocr/`	`rsync -auvz -e "ssh -p 22505" root@...:/ocr/ocr/ /root/ocr/`
Direction	Local → Remote	Remote → Local
Parameters	`-a` archive mode, `-v` verbose, `-u` update, `-z` compression	`-a` archive mode, `-v` verbose, `-u` update, `-z` compression, `-e` specify SSH
Description	Sync the local `/root/ocr/` to the remote `/root/ocr/ocr/`	Sync from the remote `/root/ocr/ocr/` to the local `/root/ocr/`

Operation

Syncing from Local to Remote

Syncing from Remote to Local

Command

rsync -avuz /root/ocr/ root@...:/root/ocr/ocr/

rsync -auvz -e "ssh -p 22505" root@...:/ocr/ocr/ /root/ocr/

Direction

Local → Remote

Remote → Local

Parameters

-a archive mode, -v verbose, -u update, -z compression

-a archive mode, -v verbose, -u update, -z compression, -e specify SSH

Description

Sync the local /root/ocr/ to the remote /root/ocr/ocr/

Sync from the remote /root/ocr/ocr/ to the local /root/ocr/