Hello,

ssh sets the DISPLAY variable itself provided that :

- the X11 forwarding is enabled in the remote sshd server :

in /etc/ssh/sshd_config : you must have : X11Forwarding yes

(man sshd_config)

- you start the ssh connection with option -X, or you enable the X11 forwarding in your local /etc/ssh/ssh_config or in your personal $HOME/.ssh/config setting the option : ForwardX11 yes

(man ssh_config)

Besides, the display syntax is :

:displaynumber

(man Xserver)

Regards --- Robert GRASSO – System engineer

CEDRAT S.A. 15 Chemin de Malacher - Inovallée - 38246 MEYLAN cedex - FRANCE Phone: +33 (0)4 76 90 50 45 - Fax: +33 (0)4 56 38 08 30 mailto:robert.grasso@cedrat.com - http://www.cedrat.com

-----Message d'origine----- De : centos-bounces@centos.org [mailto:centos-bounces@centos.org] De la part de Roland RoLaNd Envoyé : 9 décembre 2010 10:27 À : CentOS mailing list Objet : [CentOS] how to run a command on a specific vnc display

Hello,

I'm using selenium rc for automated testing on a centos box.

working on the box itself has no problem as long as i start the server through terminal.

though if i wanted to run tests remotely i have a problem with firefox not knowing on which display to run.

i have a vnc client running on port 1 (5801/5901)

I've tried the following:

export DISPLAY=1 ; java -jar selenium-server.jar > /opt/selenium/Logs/logs.txt # through ssh session though that didn't work

the only way to initiate it properly is to connect through vnc, open a terminal and type : java -jar $PWD/selenium-server.jar though i don't know how to automate this.

so i thought of setting this in xstartup # vnc's startup for display 1

as such:

1 #!/bin/sh 2 3 # Uncomment the following two lines for normal desktop: 4 unset SESSION_MANAGER 5 exec /etc/X11/xinit/xinitrc 6 while true ;do sh /opt/scripts/rc; done & 7 [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup 8 [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources 9 xsetroot -solid grey 10 vncconfig -iconic & 11 xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" & 12 twm &

]# more /opt/scripts/rc java -jar /opt/selenium/selenium-server.jar > /opt/selenium/Logs/logs.txt

Though that isn't working either, and still the firefox profile doesnt know where to start.

this is the error :

PHPUnit_Framework_Exception: Response from Selenium RC server for getNewBrowserSession(*firefox, http://www.test.com). Failed to start new browser session: Error while launching browser.

any help to automate the startup on display 1 would be greatly appreciated