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 xmove(1)                                                           xmove(1)
                              30 November 1994



 NAME
      xmove - pseudoserver to support mobile X11 clients

 SYNOPSIS
      xmove [ -server server_name:port ] [ -port listen_port ]


 DESCRIPTION
      xmove starts a pseudoserver which allows its X11 clients to be
      relocated from one display to another. Upon startup it will create a
      listening port from which it accepts new client connections. All such
      clients will be displayed on the default server, until moved
      elsewhere.  Several clients may connect through a single xmove, thus
      requiring only one per machine.

      xmove will assume logical default values for both the default
      listening port and the default server. Take as an example a typical
      machine named chestnut, with a standard X11 server named chestnut:0.

      The default server is obtained from the environment variable DISPLAY
      at start-up time, which would normally be set to chestnut:0, as in our
      example. This server is the display to which all new connections will
      be initially sent. The default server should never be set to another
      xmove.

      The default listening port is 1. In our example, this would mean
      clients should be sent to chestnut:1 instead of chestnut:0 if you wish
      them to be run through xmove.

 TYPICAL USAGE
      Assuming that the environment variable DISPLAY contains the name of
      your default server, no options need to be set.

      xmove will listen for new connections at localhost:1, where localhost
      is the machine on which xmove is being run.

      xmove displays messages to stdout and stderr as it runs, including
      information when a client is moved and whenever the X11 server sends
      an error to a client.

      To manipulate clients running on an xmove, see xmovectrl.


 SECURITY
      xmove supports both host-level security, implemented with xhost, and
      MIT-MAGIC-COOKIE-1, implemented with xauth. A new client will only be
      permitted access through xmove if it could have been started on the
      default server directly.  A client can be moved to a new server if
      that new server either permits the host on which xmove is running via
      xhost, or if the user moving the client has access to the proper
      cookie entry for the new server.



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 xmove(1)                                                           xmove(1)
                              30 November 1994



 OPTIONS
      -server
           Use the specified server as the default server to which all
           clients are to be initially displayed.

      -port
           Use the specified port as the default port through which all
           clients should connect to xmove. Users must specify a DISPLAY of
           localhost:n, where localhost is the name of the machine on which
           xmove was executed, and n is the specified port.  The port must
           be a number from 1 to 9.


 MULTI-HEADED DISPLAYS
      xmove supports displays that have multiple screens. When moving a
      client it is possible to specify the screen on the destination
      machine. When starting a client through an xmove with a multi-headed
      default server, it is possible to specify the screen on which the
      client should appear, so long as both screens have the same
      characteristics (ie. both 1-bit, or both 8-bit color, etc.) If the
      screens are different, it is necessary to start the client on screen 0
      and then move to the desired screen.


 X TERMINALS
           In order to use xmove with an X terminal you can run xmove on
      another workstation, and specify the X terminal as the default server.
      If multiple people wish to run xmove on the same workstation for
      multiple X terminals, each xmove must have its own listening port.


 ENVIRONMENT
      The environment variable XMOVE_ATOMMAP_LIBPATH can be set to the
      directory where xmove's support libraries are located. This will
      override the directory set at compile time.


 SEE ALSO
      xmovectrl(1), X11(7), xhost(1), xauth(1)


 BUGS
      This is a fairly untested product. Without attempting to frighten off
      potential users, it is recommended that all applications intended to
      be used with xmove first be tested in an xmove environment. This
      includes attempting to move the application to a new server.

      xmove does not work in all environments nor with all programs.
      Although xmove does support moving clients between displays with
      different characteristics, there are limitations.  Most notably, a
      client started on a 1-bit black-and-white display can only be moved to



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 xmove(1)                                                           xmove(1)
                              30 November 1994



      other 1-bit displays. Additionally, xmove does not support 24-bit
      displays, although some users have reported sporadic success.

      xmove requires font compatibility between displays. Thus, if your
      client makes use of a certain font, that font must be available on all
      displays to which your client is moved.

      Bug reports and other problems may be sent to ethan@cs.columbia.edu.

      Questions regarding xmove, its capabilities, limitations and future
      possibilities may be sent to that email address, or posted to
      comp.windows.x.


 NOTES
      Always remember that not all of your applications need to use xmove.
      If some of your clients prove incompatible with xmove, simply run them
      directly to the desired server.


 AUTHORS
      Ethan Solomita, Columbia University

      Peter Skopp, Columbia University

      Ari Shamash, Columbia University

      This work was supported by Professor Dan Duchamp of Columbia
      University and by Dick Sillman and Jim Kempf of Sun Microsystems, Inc.

      xmove is based upon xmon, which was written by Greg McFarlane, OTC,
      Australia.

      xmon was based upon xscope, written by James L. Peterson, MCC.




















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