Re: problem debugging xset command inside batch script (revised)

2008-02-19 Thread Larry Hall (Cygwin X)

jjo wrote:

Larry Hall (Cygwin X  cygwin.com> writes:


Again, DISPLAY not set?  But your alternative will leave you with a
console window, or at least briefly.  If this is not tolerable, check
out 'run'.



I have to admit that adding the line
   set DISPLAY=localhost:0.0
before 
  ssh -Y remote_computer_name mathematica

solved the problem of the superfluous rxvterm (Thanks!).

However, why then does the man page for ssh admonish users against setting the
DISPLAY variable manually?


You should not set the DISPLAY variable manually on the _remote_ system.

--
Larry Hall  http://www.rfk.com
RFK Partners, Inc.  (508) 893-9779 - RFK Office
216 Dalton Rd.  (508) 429-6305 - FAX
Holliston, MA 01746

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Re: problem debugging xset command inside batch script (revised)

2008-02-19 Thread jjo
Larry Hall (Cygwin X  cygwin.com> writes:

> 
> Again, DISPLAY not set?  But your alternative will leave you with a
> console window, or at least briefly.  If this is not tolerable, check
> out 'run'.
> 

I have to admit that adding the line
   set DISPLAY=localhost:0.0
before 
  ssh -Y remote_computer_name mathematica
solved the problem of the superfluous rxvterm (Thanks!).

However, why then does the man page for ssh admonish users against setting the
DISPLAY variable manually?




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Re: problem debugging xset command inside batch script (revised)

2008-02-19 Thread Larry Hall (Cygwin X)

jjo wrote:

Allen, Matthew  utcretail.com> writes:


You should be able to simply set the DISPLAY variable and get xset to
work that way. The other option I'd think you should be able to do is
use a "-display" option to xset. But I haven't confirmed xset has it.



Thanks, Allen. Indeed, xset does have a '-display' option and using it with
'localhost:0.0' fixed the problem with my Windows/DOS script.


The next question is this:

At the end of my script I start Mathematica on the remote computer and display
its front end in a local X window with this command

   rxvt -e ssh -Y remote_computer_name mathematica

This works but leaves behind a superfluous RXVTerm that I'd rather not see.

This should work without the extra RXVTerm, but doesn't

   ssh -Y remote_computer_name mathematica

Why?


Again, DISPLAY not set?  But your alternative will leave you with a
console window, or at least briefly.  If this is not tolerable, check
out 'run'.

--
Larry Hall  http://www.rfk.com
RFK Partners, Inc.  (508) 893-9779 - RFK Office
216 Dalton Rd.  (508) 429-6305 - FAX
Holliston, MA 01746

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Re: problem debugging xset command inside batch script (revised)

2008-02-19 Thread jjo
Allen, Matthew  utcretail.com> writes:

> 
> You should be able to simply set the DISPLAY variable and get xset to
> work that way. The other option I'd think you should be able to do is
> use a "-display" option to xset. But I haven't confirmed xset has it.
> 

Thanks, Allen. Indeed, xset does have a '-display' option and using it with
'localhost:0.0' fixed the problem with my Windows/DOS script.


The next question is this:

At the end of my script I start Mathematica on the remote computer and display
its front end in a local X window with this command

   rxvt -e ssh -Y remote_computer_name mathematica

This works but leaves behind a superfluous RXVTerm that I'd rather not see.

This should work without the extra RXVTerm, but doesn't

   ssh -Y remote_computer_name mathematica

Why?

jjo


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RE: problem debugging xset command inside batch script (revised)

2008-02-19 Thread Allen, Matthew
You should be able to simply set the DISPLAY variable and get xset to
work that way. The other option I'd think you should be able to do is
use a "-display" option to xset. But I haven't confirmed xset has it.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Tuesday, February 19, 2008 3:40 PM
To: cygwin-xfree@cygwin.com
Subject: problem debugging xset command inside batch script (revised)

I have narrowed the problem down to the following:

It appears that I cannot run the xset command with the options I need
from a
Windows/DOS command shell or batch file. For example, when I enter the
command 
xset -q
the response is
xset:  unable to open display ""
The same is true even if the xset command is called from within a bash
shell
script which itself is called from a Windows/DOS shell. So it's not due
to
bash or DOS. Rather, it's because the calling program doesn't have an X
display to communicate with.

As confirmation of this, I observe that the problem does not occur when
I
call the same script from a Cygwin/rxvt shell because this shell has an
X
display already defined.

It would be nice to be able to update the X font path on the fly and
only
when I want to start up this particular application, but short of that,
adding the necessary font path to the permanent X font path would be OK
too.
How do I do that?

Thanks,

jjo



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