xmove(1)xmove(1)NAMExmove - pseudoserver to support mobile X11 clients
SYNOPSISxmove [ -server server_name:port ] [ -port listen_port ]
DESCRIPTIONxmove starts a pseudoserver which allows its X11 clients to be relo‐
cated from one display to another. Upon startup it will create a lis‐
tening 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.
SECURITYxmove 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.
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 multi‐
ple X terminals, each xmove must have its own listening port.
ENVIRONMENT
The environment variable XMOVE_ATOMMAP_LIBPATH can be set to the direc‐
tory where xmove's support libraries are located. This will override
the directory set at compile time.
SEE ALSOxmovectrl(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 char‐
acteristics, there are limitations. Most notably, a client started on
a 1-bit black-and-white display can only be moved to other 1-bit dis‐
plays. 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.win‐
dows.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.
30 November 1994 xmove(1)
