Multiple Session Question
Hello, I've got cygwin working well via SSH to single host, single window. I connect via SSH, and run startkde - I get the KDE desktop in one single window. Works great! How do I connect to a second machine at the same time. See below for details. -Duane. For example: I login as my self - with ssh a remote session And I login as another person to the same machine. In my case, I have two accounts: A development account And A Test account. Likewise, I have this situation: I login to Machine1 - and it works. I login to Machine2 - and it works. Problem: I can only have 1 connection to 1 machine at a time. Both should have separate window/display. I have done this with commercial X11 packages, but not CygwinX. This does not seem to work, and I can't seem to find in the user docs any thing that reasonably describes some things. (1) Yes, I have tried using a different display, ie: 127.0.0.1:0.0 And 127.0.0.1:1.0 That does not work when I have 2 sessions. The two displays work - independent of each other (2) I'm not sure what is going on with the /tmp/.X11-unix/dir And can't find docs for it - I suspect it is part of the problem. (3) I'm not sure what the --screen options do for the Xwin program. The script I to start the session (via SSH and public keys) is below, The difference between the two is WHO and DISPLAY. The script below - deletes the old /tmp/.X11-dir, which I know is a bad thing with 2 sessions. I have tried not deleting it - that does not seem to help. #!/bin/bash TARGET=linxbox WHO=duane #WHO=testaccount export DISPLAY=127.0.0.1:0.0 #export DISPLAY=127.0.0.1:1.0 export PATH=/usr/X11R6/bin:$PATH export XAPPLRESDIR=/usr/X11R6/lib/X11/app-defaults export XCMSDB=/usr/X11R6/lib/X11/Xcms.txt export XKEYSYMDB=/usr/X11R6/lib/X11/XKeysymDB export XNLSPATH=/usr/X11R6/lib/X11/locale rm -rf /tmp/.X11-unix XWin -clipboard -silent-dup-error echo STARTING KDE REMOTEL ssh -l $WHO $TARGET startkde echo DONE RUNNING KDE REMOTELY exit -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: Multiple Session Question
Duane Ellis schrieb: I've got cygwin working well via SSH to single host, single window. I connect via SSH, and run startkde - I get the KDE desktop in one single window. Works great! How do I connect to a second machine at the same time. You will need Xwin :1 for the second and Xwin :2 for the third session and so on. But i wonder how your first connect works anyway, have you setup ssh tunneling somewhere? (1) Yes, I have tried using a different display, ie: 127.0.0.1:0.0 And 127.0.0.1:1.0 You will need this (2) I'm not sure what is going on with the /tmp/.X11-unix/dir And can't find docs for it - I suspect it is part of the problem. I don't think so. (3) I'm not sure what the --screen options do for the Xwin program. not needed here The script below - deletes the old /tmp/.X11-dir, which I know is a bad Don't #!/bin/bash TARGET=linxbox WHO=duane #WHO=testaccount export DISPLAY=127.0.0.1:0.0 #export DISPLAY=127.0.0.1:1.0 export PATH=/usr/X11R6/bin:$PATH export XAPPLRESDIR=/usr/X11R6/lib/X11/app-defaults export XCMSDB=/usr/X11R6/lib/X11/Xcms.txt export XKEYSYMDB=/usr/X11R6/lib/X11/XKeysymDB export XNLSPATH=/usr/X11R6/lib/X11/locale rm -rf /tmp/.X11-unix XWin -clipboard -silent-dup-error -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
RE: [Fwd: Re: Multiple Session Question]
No that does not work - session1 starts, then session2 - overwrites/destroys session1. Then it gets really weird Both are using the same display number (0.0) Besides, this is problematic in another way. I need to be able login/logout of the two accounts independently. -Duane. -Original Message- From: Reid Thompson [mailto:[EMAIL PROTECTED] Sent: Thursday, June 07, 2007 11:10 AM To: Duane Ellis Subject: [Fwd: Re: Multiple Session Question] failed to copy you on the reply to the list try #!/bin/bash TARGET=linxbox TARGETONE=linxbox1 WHO=duane WHO1=testaccount export DISPLAY=127.0.0.1:0.0 #export DISPLAY=127.0.0.1:1.0 export PATH=/usr/X11R6/bin:$PATH export XAPPLRESDIR=/usr/X11R6/lib/X11/app-defaults export XCMSDB=/usr/X11R6/lib/X11/Xcms.txt export XKEYSYMDB=/usr/X11R6/lib/X11/XKeysymDB export XNLSPATH=/usr/X11R6/lib/X11/locale XWin -clipboard -silent-dup-error echo STARTING KDE REMOTEL ssh -l $WHO $TARGET startkde ssh -l $WHO1 $TARGETONE startkde echo DONE RUNNING KDE REMOTELY exit -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: Multiple Session Question
On Thu, 2007-06-07 at 10:50 -0400, Duane Ellis wrote: Hello, I've got cygwin working well via SSH to single host, single window. I connect via SSH, and run startkde - I get the KDE desktop in one single window. Works great! How do I connect to a second machine at the same time. See below for details. -Duane. For example: I login as my self - with ssh a remote session And I login as another person to the same machine. In my case, I have two accounts: A development account And A Test account. Likewise, I have this situation: I login to Machine1 - and it works. I login to Machine2 - and it works. Problem: I can only have 1 connection to 1 machine at a time. Both should have separate window/display. I have done this with commercial X11 packages, but not CygwinX. This does not seem to work, and I can't seem to find in the user docs any thing that reasonably describes some things. (1) Yes, I have tried using a different display, ie: 127.0.0.1:0.0 And 127.0.0.1:1.0 That does not work when I have 2 sessions. The two displays work - independent of each other (2) I'm not sure what is going on with the /tmp/.X11-unix/dir And can't find docs for it - I suspect it is part of the problem. (3) I'm not sure what the --screen options do for the Xwin program. The script I to start the session (via SSH and public keys) is below, The difference between the two is WHO and DISPLAY. The script below - deletes the old /tmp/.X11-dir, which I know is a bad thing with 2 sessions. I have tried not deleting it - that does not seem to help. #!/bin/bash TARGET=linxbox WHO=duane #WHO=testaccount export DISPLAY=127.0.0.1:0.0 #export DISPLAY=127.0.0.1:1.0 export PATH=/usr/X11R6/bin:$PATH export XAPPLRESDIR=/usr/X11R6/lib/X11/app-defaults export XCMSDB=/usr/X11R6/lib/X11/Xcms.txt export XKEYSYMDB=/usr/X11R6/lib/X11/XKeysymDB export XNLSPATH=/usr/X11R6/lib/X11/locale rm -rf /tmp/.X11-unix XWin -clipboard -silent-dup-error echo STARTING KDE REMOTEL ssh -l $WHO $TARGET startkde echo DONE RUNNING KDE REMOTELY exit -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/ try #!/bin/bash TARGET=linxbox TARGETONE=linxbox1 WHO=duane WHO1=testaccount export DISPLAY=127.0.0.1:0.0 #export DISPLAY=127.0.0.1:1.0 export PATH=/usr/X11R6/bin:$PATH export XAPPLRESDIR=/usr/X11R6/lib/X11/app-defaults export XCMSDB=/usr/X11R6/lib/X11/Xcms.txt export XKEYSYMDB=/usr/X11R6/lib/X11/XKeysymDB export XNLSPATH=/usr/X11R6/lib/X11/locale XWin -clipboard -silent-dup-error echo STARTING KDE REMOTEL ssh -l $WHO $TARGET startkde ssh -l $WHO1 $TARGETONE startkde echo DONE RUNNING KDE REMOTELY exit -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
RE: [Fwd: Re: Multiple Session Question]
=
Holger Krull You will need Xwin :1 for the second and
Xwin :2 for the third session and so on.
That's the solution - I forgot - is the same way on linux.
Thank you very much, works *GREAT*
For those reading this (via a search engine), if it is not specified, the
default is :0 Which is Display 0,
Below is a resulting template script that works very nicely, for me, with
some limitations.
I could - via additional shell tricks, do the following:
1) In the directory: /tmp/.X11-unix/ are unix ?sockets?
(visible only under CYGWIN not via windows).
In my case, right now, I have these two files:
/tmp/.X11-unix/X0
And /tmp/.X11-unix/X2
Thus right now, Display 0, and 2 are active, yours may be different.
2) I could write shellscript stuff that finds a free display number
And uses that number - instead of hard coding the display number.
I'll leave that as an exercise for you, the reader.
3) Also - one must deal with cleanup of stale files laying around.
in some clean and graceful way.
=
Holger Krull But i wonder how your first connect works anyway, have you
setup ssh tunneling somewhere?
Yes, I have, via my ~/.ssh/config file - I have lots of things setup
Including X-11 forwarding, my identity file, etc. That way I do not have to
re-specify a zillion options everyplace I script SSH.
Again, for those reading this via a search engine, my ssh_config file looks
sort of like this I have many accounts, in this example I use R and X. Both
Accounts have different user names.
I could - specify -X, -L, -I, and -lots-of-options on every command line
everywhere I use SSH --yuck, and --double-yuck Or - I can use an SSH config
file (which hides/collects that sort of stuff in one nice little file.
Blow is an example short snippit of an ssh config file (maybe with typos), I
can type: 'ssh rrr' or 'ssh xxx' and it works just fine, see man
ssh_config for more details I could add other host entries - like: ssh
plant1 or ssh plant2 or ssh home and, if needed, with the cygwinX
shellscript (and a fat pipe) run X sessions from anywhere in the world.
File: ~/.ssh/config
Host rrr
Hostname rrr.someplace.special.com
ForwardX11 yes
ForwardX11Trusted yes
IdentityFile id_rsa_rrr
User dellis
[blank lines]
Host xxx
Hostname xxx.other.place.com
ForwardX11 yes
ForwardX11Trusted yes
IdentityFile id_rsa_xxx
User duane
-- SCRIPT --
#---
#! /bin/sh
# Important variables are:
# TARGET = hostname you want to connect to.
# WHO = who (username) you want to connect as.
# D_NUM = display number to use for this session.
TARGET=myhostname
WHO=myusername
D_NUM=2
export DISPLAY=127.0.0.1:${D_NUM}.0
export PATH=/usr/X11R6/bin:$PATH
export XAPPLRESDIR=/usr/X11R6/lib/X11/app-defaults
export XCMSDB=/usr/X11R6/lib/X11/Xcms.txt
export XKEYSYMDB=/usr/X11R6/lib/X11/XKeysymDB
export XNLSPATH=/usr/X11R6/lib/X11/locale
XWin :${D_NUM} -clipboard -silent-dup-error
ssh -l $WHO $TARGET startkde
exit
--
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