Re: [ilugd] Automatically setting display.. A roadblock

2008-09-23 Thread Ashish Shukla आशीष शुक्ल
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Tanveer Singh writes:
 I used to have this in my .cshrc
 set DISP = `who am i | sed -e s/(// -e s/)// | awk '{printf %s,$6}'`
 setenv DISPLAY {$DISP}:0.0

 This works as long as I am on X server 0
 So my local machine is alpha and I login to beta, I would have a
 DISPLAY set to alpha:0

I think this will be insecure, unless you're using XAUTH and other form
of ACLs provided by X, and X11 Forwarding via OpenSSH is the recommended
way to do this in my opinion, where you don't need such ugly hacks :D
. For more information, RTFM ssh(1).

 The problem is what if my local machine X was started with startx --
 :1 and not startx
 Then also it would set it to alpha:0, though the correct usage would be 
 alpha:1
 Is there a way of automatically doing that?

And what if you're logged-in at :1 and want to work at :0, hmm...? There
is nothing like correct here, probably you've to specify some kind of
logic, on why you want to work on :1, when you can work on :0.

The directory '/tmp/.X11-unix' contains the sockets to all the X servers
running at any instant on a host. So maybe you would like to hack a
shell script to enumerate between those sockets and figure out yourself,
which $DISPLAY you want to connect to :) .

Ashish
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Re: [ilugd] Automatically setting display.. A roadblock

2008-09-23 Thread Tanveer Singh
On Tue, Sep 23, 2008 at 3:58 PM, Ashish Shukla आशीष शुक्ल
[EMAIL PROTECTED] wrote:
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 I think this will be insecure, unless you're using XAUTH and other form
 of ACLs provided by X, and X11 Forwarding via OpenSSH is the recommended
 way to do this in my opinion, where you don't need such ugly hacks :D
 . For more information, RTFM ssh(1).

ssh? I am not using ssh. The box I am logging onto is via rsh.  For
ssh its simple, no DISPLAY nonsense, just do ssh -X and it works
 And what if you're logged-in at :1 and want to work at :0, hmm...?
Nope, I don't want to do that.
All I want is this
Suppose I do a startx -- :1 on alpha
My X server starts
I open xterm and do a rsh -l username beta
When I login on beta, my display should be automatically set to alpha:1
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Re: [ilugd] Automatically setting display.. A roadblock

2008-09-23 Thread Ashish Shukla आशीष शुक्ल
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Tanveer Singh writes:

[snip]

 ssh? I am not using ssh. The box I am logging onto is via rsh.  For
 ssh its simple, no DISPLAY nonsense, just do ssh -X and it works
 And what if you're logged-in at :1 and want to work at :0, hmm...?
 Nope, I don't want to do that.
 All I want is this
 Suppose I do a startx -- :1 on alpha
 My X server starts
 I open xterm and do a rsh -l username beta
 When I login on beta, my display should be automatically set to alpha:1

I've never used rsh(1), and from a glance on its manpage, I don't think
it supports exporting environment variables, so the only thing you can
do is to probably invoke a script (a wrapper script around your shell
which also exports the desired $DISPLAY to the shell) on your login to
the server.

Ashish
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% dig +short cname cdac.in @::1
ms.gov.in
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iEYEARECAAYFAkjYy3EACgkQHy+EEHYuXnSeJQCgtIIr5v9Si7NJEdpnbJdk71zl
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