[FreeNX-kNX] NX session $DISPLAY set to ":$PORT_NUM", how to configure it to '$HOSTNAME:$PORT_NUM'?

[Mark Christian]

My users need to be able to do X forwarding from the NX host.  DISPLAY needs to include the hostname in order for our compute farm nodes to know where to send X to.  The NX host serves as a linux desktop from where "interactive" jobs are launched to a compute farm which are then expected to display back on the NX host.  ssh -X is not an option.

I thought I stumbled across documentation suggesting sourcing ~/.tcshrc was not done with NX, my limited experiments would suggest this is true.  However I admit to being a novice tcsh user and will continue to test.

The following does not do what I expect when one launches an NX session with tcsh
~$ cat .tcshrc
#!/bin/tcsh
setenv DISPLAY ${HOSTNAME}${DISPLAY}

Is there no global NX setting to change the behavior of $DISPLAY to include $HOSTNAME?

Mark

From: freenx-knx-bounces at kde.org [mailto:freenx-knx-bounces at kde.org] On Behalf Of chris at ccburton.com
Sent: Sunday, October 23, 2011 9:47 PM
To: User Support for FreeNX Server and kNX Client
Subject: Re: [FreeNX-kNX] NX session $DISPLAY set to ":$PORT_NUM", how to configure it to '$HOSTNAME:$PORT_NUM'?


freenx-knx-bounces at kde.org wrote on 20/10/2011 08:16:42:

> I need DISPLAY to be set to $HOSTNAME:$PORT_NUMBER in order to
> enable X forwarding to the NX host.

Why?? What's wrong with localhost?? (IPv6 in /etc/hosts maybe???)

> I can accomplish this for bash
> users by placing the following in ~/.bashrc
>
> export DISPLAY=${HOSTNAME}${DISPLAY}
>
> e.g.:
> $ echo $DISPLAY
> :1001
> $ export DISPLAY=$HOSTNAME$DISPLAY
> $ echo $DISPLAY
> myhost:1001
>
> Unfortunately this cannot be done for tcsh/csh users, since it
> appears NX does not source ~/.cshrc

NX doesn't need to.

Upon being lauched, tcsh/csh always runs ~/.tcshrc (if it
exists or else ~/.cshrc if it exists), regardless of what
kicks it off . .  .
unless you are telling it not to eg. tcsh -f

Do you maybe have a messy line in ~/.cshrc which is
stoppingif it running correctly.

I can run NX quite happily using tcsh without changing
anything.

[SNIP]

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