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 at cedrat.com - http://www.cedrat.com > -----Message d'origine----- > De : centos-bounces at centos.org > [mailto:centos-bounces at 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 > > >