How to use rsync for remote sync?

To use rsync for remote synchronization, you can specify the remote server's address in the command. Here’s the general syntax:

rsync [options] source/ user@remote_host:/path/to/destination/

Example Usage

Syncing Local to Remote: To sync a local directory to a remote server, use:
```
rsync -avz /path/to/local/dir/ user@remote_host:/path/to/remote/dir/
```
- -a: Archive mode (preserves permissions, timestamps, etc.)
- -v: Verbose output
- -z: Compresses data during transfer
Syncing Remote to Local: To sync a remote directory to your local machine, use:
```
rsync -avz user@remote_host:/path/to/remote/dir/ /path/to/local/dir/
```

Additional Options

Delete: To delete files in the destination that are not present in the source, add the --delete option:
```
rsync -avz --delete /path/to/local/dir/ user@remote_host:/path/to/remote/dir/
```
Dry Run: To see what would be transferred without actually doing it, use the --dry-run option:
```
rsync -avz --dry-run /path/to/local/dir/ user@remote_host:/path/to/remote/dir/
```

Authentication

When using rsync with a remote server, you may need to provide a password for the user account on the remote server. Alternatively, you can set up SSH keys for passwordless authentication.

Example with SSH

If you want to specify a different SSH port, you can do so with the -e option:

rsync -avz -e 'ssh -p 2222' /path/to/local/dir/ user@remote_host:/path/to/remote/dir/

Replace 2222 with your desired SSH port.