or you can use ssh and scp to copy files.
type ssh <host> -l user to login to the remote computer.
Here's how to upload a file
Example:
scp filename.jpg user@host:/path/to/upload
-------
and How to download...
Example:
scp [-options] <username>@<hostname>:<path>
<destination>
scp
john@metal.com:foo.txt bar.txt
Copies a file
foo.txt from the network on your computer and saves it as bar.txt
