1. Get rdesktop 1.5.0 or later from http://www.rdesktop.org/. I used 1.6 which is in the Ubuntu Karmic repository, so just do
   apt-get install rdesktop
2. Prepare your windows (virtual) machine:
   • Enable remote desktop Start-Settings-System → Check Remote Desktop
   • Enable “Welcome screen” and “Fast user switching” in Settings-Useraccounts. If you don't do this, you will not be able to use seamless mode and possible have problems keeping your sessions alive.
3. create a short shellscript containing your command line, e.g.:
   rdesktop -g 1024×768 -k de-ch -u user -p password machine-name

 2.             

                Get the server side component, "seamlessrdpshell". It is
                available in the seamlessrdp
                CVS module.
                

                You can also download a pre-built binary from
                http://www.cendio.com/seamlessrdp/seamlessrdp.zip.
                Unpack the files to some directory on the server, such as
                c:\seamlessrdp.
                

 3.             

                Run rdesktop with:
                

    rdesktop -A -s "c:\seamlessrdp\seamlessrdpshell.exe notepad"

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