Appendix B: X Server Reference Page
Name
X: X Window System server
Synopsis
:displaynumber
Description
"X" is the generic name for the window system server. It is started by the dtlogin program which is typically run by init(1M). Alternatively, it may be started from the xinit(1) program, which is called by x11start. The <displaynumber> argument is used by clients in their DISPLAY environment variables to indicate which server to contact (machines may have several displays attached). This number can be any number. If no number is specified 0 is used. This number is also used in determining the names of various startup files. The ttyname argument is passed in by init and isn't used.
The
TCP/IP
The server listens on port 6000+n, where n is the display number.
Local Socket IPC Mechanism
The file name for the socket is /var/spool/sockets/X11/* where "*" is the display number.
Shared Memory IPC
If the Shared Memory Transport (SMT) option is enabled in the Xserver, this will be the default connection that the X Library will use to connect to an X server on the same machine if the DISPLAY environment variable is set to "local:*" or ":*" where "*" is the number of the display. Currently, SMT is not enabled by default. Please see /etc/X11/X0screens and/or /usr/lib/X11/Xserver/info/screens/hp for more information about SMT.
When the server starts up, it takes over the display. If you are running on a workstation whose console is the display, you cannot log into the console while the server is running.
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