rdesktop file transfer
While connecting, use this syntax to share a folder (or entire directory) on your local machine to a remote computer
rdesktop -r disk:<new sharename>=/<local path to share> <ip>
when logged into the remote machine, open a file explorer and navigate to the share via the given <new sharename>. I didnt check to see what additional artifacts are left from this session compared to a regualr rdesktop connection