[SHR] X forwarding: export DISPLAY?

[Xavier Cremaschi]

Basically, you need

a computer with :
- a working X server (mainly Xorg)
- a working ssh client with -X option (mainly openssh-client)
(Note for working X server on cygwin : be sure to launch xterm, not the
basic tty)

a Freerunner with :
- a working X client (the app you want to launch, tangogps for example)
- a working ssh server with "X11Forwarding yes" in its config (for
openssh-server it's in /etc/ssh/sshd_config, be sure to restart ssh
server after any modification to this file)


Then give us any error you can see while doing your ssh -X.

On the freerunner, and after a ssh -X, $DISPLAY should NOT be :
    localhost:0
because it's the X server of the freerunner, but it should be something
like :
    localhost:10.0
which is where ssh server listen to transmit your display data to ssh
client.


Xavier.