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Re: Finding my $DISPLAY programatically.


On 2 May 2008, at 15:42, Mark J. Reed wrote:

On Fri, May 2, 2008 at 10:38 AM, Robert Tillyard <email@hidden> wrote:
I use rexec to get the remote applications to run which works pretty well,
however, I'm currently having to hard code the DISPLAY to <my IP>:0.0
because the remote systems don't understand the launchd style DISPLAY. 

I don't understand.  How do the remote systems deal with even a
non-launchd-style *local* DISPLAY value, e.g. just plain :0 without a
hostname?  Something must already be translating that somewhere.

Why not use ssh instead of rexec, with its X11 tunnelling that
automatically sets the remote DISPLAY appropriately?

--
Mark J. Reed <email@hidden>

At present I am hard coding the DISPLAY to their IP address with :0.0 tacked on, so for my computer that would be 172.16.1.1:0.0 which the remote end does understand.

Some of the remote systems are quite old and don't all have ssh and in order to use ssh I need to get the users user name and password into the command line but there is no -password option to ssh and even if there was another user could see the password by doing a ps.

I'm hoping that it is easier to find a valid DISPLAY that a remote host will recognise that it is to convert the application to use ssh. If that's not possible then I will have to restrict the Macs to have only one user at a time and if X11 crashes they'll have to reboot it but I'd like to be more friendly than that if I can.

Regards, Rob.
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References: 
 >Finding my $DISPLAY programatically. (From: Robert Tillyard <email@hidden>)
 >Re: Finding my $DISPLAY programatically. (From: "Mark J. Reed" <email@hidden>)



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