Nico Galoppo <[EMAIL PROTECTED]> writes:
> --* Owen Taylor (Wed, Oct 03, 2001 at 08:36:24AM -0400) *--
>
> > You can find out what display/server applications are using by
> > printing the DISPLAY environment variable:
> >
> > echo $DISPLAY
>
> Sorry, I think i misexpressed myself. I'd like to know what display the
> X server is listening on.
A server running on DISPLAY <N> will typically:
- listen on the TCP port 6000 + <N>
- listen on the Unix domain socket /tmp/.X11-unix/X<N>
(It could also be listening on DECNET, OS/2 pipes, etc...
IPv6 support is likely to become standard at some point
in the future.)
So, by using a command such as 'lsof' it's possible to
figure out what displays a server is listening on.
There is (AFAIK) no way to find this out through the X
protocol, because a server may be available by many names. A
display name is a way of contacting a display. A single
display may well be available as:
:0 - local unix domain socket
localhost:0 - Over TCP
:10.0 - forwarded over ssh
> Eg. ssh sets $DISPLAY to
> myhost.domain.org:10.0, while that doesn't work if the Xserver is
Note that ssh acts as a proxy server, so
myhost.domain.org:10.0 will typically be forwarded through
to your real display.
Regards,
Owen
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