On Sat, 2006-01-28 at 00:31 +1100, Ben Stringer wrote: > On Fri, 2006-01-27 at 14:13 +0100, brouwers roland lx wrote: > > To login to my application I use Putty. To display a picture I do a > > systemcall, which opens a shell, and launch : 'display mypicture.jpg'. > > I get the answer : display: unable to open X server > > How can I get around this? > > Hi Roland, > > If you are using putty, I presume you are doing this from Windows. > > To do what you want to do, you will need to run a X-server on your > windows PC. I'm a bit rusty on what is available (not being a windows > user), but if you google for "windows X server" you should find > something. > > Once you have an X server running on your Windows PC, you then need to > make sure that the X server allows connections from the client (the > Linux machine). To do this, use the "xhost" command. Eg. xhost linuxpc. > > To ensure the Linux PC knows how to display it's running application on > your Windows PC's X server, either use the "-Y" option to ssh (trusted > X11 forwarding) if putty supports this, or set the "DISPLAY" environment > variable the the hostname and display of your Windows PC's X server. Eg. > > export DISPLAY=winders:0 > > Good luck - this info plus some googling should get you there. You can > also look at the man pages on the linux machine for xhost and ssh. Ie. > "man ssh", and "man xhost". > > Cheers, Ben Dear Ben, Thank you for your answer. I am not using windows. I am starting putty on the Linux-Centos-desktop of a Ltsp installation. I connect to my database, running on application that wants to display pictures, belonging to some data. When I do a system I get out of my application to the Linux shell, running display and going back to may application, after the display. AS x-window is not my thing, I do not understand how to switch to a window where Linux can execute the display-command. Because if you open a standard-terminal-window on the desktop, this command works. Roland
