On Wed, Oct 01, 2008 at 10:38:35AM -0400, Adam Jackson wrote: > Orthogonal to whether koji can or should let you do it, this came up in > the context of another discussion today. I think what we'll end up > doing is something like: > > Xvfb -displayfd 3 3>& /tmp/whatever > > to give the server a way of both picking a free display number, and > communicating it back to the launching process. Does that sound like > it'd work for you? Yes, really useful.. It's also worth noting that Debian ship something called Xvfb-run: http://www.penguin-soft.com/penguin/man/1/xvfb-run.html DESCRIPTION xvfb-run is a wrapper for the Xvfb (1x) command which simplifies the task of running commands (typically an X client, or a script containing a list of clients to be run) within a virtual X server environment. xvfb-run sets up an X authority file (or uses an existing user-specified one), writes a cookie to it (see xauth (1x)) and then starts the Xvfb X server as a background process. The process ID of Xvfb is stored for later use. The specified command is then run using the X display corresponding to the Xvfb server just started and the X authority file created earlier. When the command exits, its status is saved, the Xvfb server is killed (using the process ID stored earlier), the X authority cookie removed, and the authority file deleted (if the user did not specify one to use). xvfb-run then exits with the exit status of command . Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/ -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list