dired copy marked files in xterm

[Fabian Braennstroem]

Hi,

    I would like to use the system 'cp' function in an xterm
    to copy marked files in dired.
    Right now, this small function works with the current
    file:

(defun tacopybackground(var1)
    "Copy"
  (interactive)
       (call-process-shell-command (concat "xterm -e 'cp -R 
"(dired-get-filename)" " (dired-dwim-target-directory) " &'"))
       )

    but obviously it needs some kind of loop or different
    approach for marked files!?:

       (call-process-shell-command (concat "xterm -e 'cp -R 
"(dired-get-marked-files)" " (dired-dwim-target-directory) " &'"))

    Does anyone have an idea or any suggestion? At the end I
    would actually use a similar command to transfer several
    large (up to 2-3GB) files to an remote machine using
    scp. Tramp is unfortunately to slow...

Greetings!
 Fabian