You can share a folder on the client machine so that it's available for read and write on the server to which you do remote desktop.
use the -r option of rdesktop.
rdesktop 172.16.229.23 -r disk:share=/tmp
On remote machine, you can see an new drive with name 'share on'. You can read/write files from the drive.
use the -r option of rdesktop.
rdesktop 172.16.229.23 -r disk:share=/tmp
On remote machine, you can see an new drive with name 'share on