Xwrapper.config man page on Ubuntu

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Xwrapper.config(5)					    Xwrapper.config(5)

NAME
       Xwrapper.config - configuration options for X server wrapper

DESCRIPTION
       /etc/X11/Xwrapper.config contains a set of flags that determine some of
       the behavior of Debian's X server wrapper, which is  installed  on  the
       system as /usr/bin/X.  The purpose of the wrapper, and of this configu‐
       ration file, is twofold.

       Firstly, it is intended to implement sound security  practices.	 Since
       the  X server requires superuser privileges, it may be unwise to permit
       just any user on the system to execute it.  Even if the X server is not
       exploitable  in the sense of permitting ordinary users to gain elevated
       privileges, a poorly-written or insufficiently-tested  hardware	driver
       for  the	 X  server  may	 cause	bus  lockups and freeze the system, an
       unpleasant experience for anyone using it at the time.

       Secondly, a wrapper is a convenient place to set up an execution	 envi‐
       ronment	for  the X server distinct from the configurable parameters of
       the X server itself.

       Xwrapper.config may be edited by hand, but it is	 typically  configured
       via debconf(7), the Debian configuration tool.  The X server wrapper is
       part of the x11-common Debian package;  therefore,  the	parameters  of
       Xwrapper.config may be changed with the command
	      dpkg-reconfigure x11-common.
       See dpkg-reconfigure(8) for more information.

       The  format  of	Xwrapper.config	 is a text file containing a series of
       lines of the form

       name=value

       where name is a variable name containing any  combination  of  numbers,
       letters,	 or underscore (_) characters, and value is any combination of
       letters, numbers, underscores (_), or dashes (-).  value may also  con‐
       tain  spaces  as	 long as there is at least one character from the list
       above bounding the space(s) on both sides.  Whitespace before and after
       name,  value,  or  the equals sign is legal but ignored.	 Any lines not
       matching the above described legal format are ignored.  Note that  this
       specification may change as the X server wrapper develops.

       Available options are:

       allowed_users
	      may be set to one of the following values: rootonly, console, or
	      anybody.	rootonly indicates that only the root user  may	 start
	      the  X  server;  console	indicates that root, or any user whose
	      controlling TTY is a virtual console, may start  the  X  server;
	      and anybody indicates that any user may start the X server.

AUTHORS
       The  X  server  wrapper	was written by Stephen Early, Mark Eichin, and
       Branden Robinson for the Debian Project,	 with  valuable	 contributions
       from  Erik  Troan,  Topi Miettinen, and Colin Phipps.  This manual page
       was written by Branden Robinson with  sponsorship  from	Progeny	 Linux
       Systems.

SEE ALSO
       debconf(7), dpkg-reconfigure(8)

Debian Project			  2004-10-31		    Xwrapper.config(5)
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