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NAME

       xmatrix - simulates the computer displays from the movie

SYNOPSIS

       xmatrix  [-display  host:display.screen]  [-window]  [-root] [-install]
       [-visual visual] [-delay usecs] [-density percentage] [-top | -bottom |
       -both] [-small | -large] [-trace] [-mode mode] [-phone number] [-fps]

DESCRIPTION

       The  xmatrix program draws the 2D "digital rain" effect, as seen on the
       computer monitors in the Wachowski brothers' film, "The Matrix".

       Also see glmatrix(6x) for a 3D rendering of  the  similar  effect  that
       appeared in the title sequence of the movie.

OPTIONS

       xmatrix accepts the following options:

       -window Draw on a newly-created window.  This is the default.

       -root   Draw on the root window.

       -install
               Install a private colormap for the window.

       -visual visual
               Specify  which  visual  to use.  Legal values are the name of a
               visual class, or the id number (decimal or hex) of  a  specific
               visual.

       -delay usecs
               The  delay  between  steps  of  the animation, in microseconds:
               default 10000.

       -density percentage
               The approximate percentage of the screen that should be  filled
               with characters at any given time.  Default 75%.

               When  running  in  a window, typing + will increase the density
               and typing - will decrease it.  Typing 0 will momentarily drain
               the screen.

       -top | -bottom | -both
               If -top is specified, the characters will only drop in from the
               top of the screen as sliding columns of characters.  If -bottom
               is  specified,  then instead of sliding columns, the characters
               will appear as columns that grow downwards and are erased  from
               above.   If  -both  is specified, then a mixture of both styles
               will be used.  The default is -both.

               When running in a window, typing [  will  switch  to  top-mode,
               typing  ]  will switch to bottom-mode, and typing \ will switch
               to both-mode.

       -small | -large
               These options specify the sizes of the characters.  The default
               is -large.

       -mode trace
               Start off with a representation of a phone number being traced.
               When the number is finally found, display The Matrix as  usual.
               This is the default.

       -phone number
               The phone number to trace, if -trace is specified.

       -mode crack
               Start off by shutting down the power grid.

       -mode binary
               Instead  of  displaying  Matrix  glyphs,  only display ones and
               zeros.

       -mode hexadecimal
               Instead  of  displaying  Matrix  glyphs,  display   hexadecimal
               digits.

       -mode dna
               Instead  of  displaying  Matrix  glyphs,  display  genetic code
               (guanine, adenine, thymine, and cytosine.)

       -mode ascii
               Instead of  displaying  Matrix  glyphs,  display  random  ASCII
               characters.

       -mode pipe
               Instead  of displaying random characters, display the output of
               a subprocess, as ASCII.

       -program sh-command
               The command to run to  generate  the  text  to  display.   This
               option  may  be  any string acceptable to /bin/sh.  The program
               will be run at the end of a pty or  pipe,  and  any  characters
               that  it  prints  to  stdout  will be placed in the feeders for
               xmatrix. If the program exits, it will be launched again  after
               xmatrix has processed all the text it produced.

               For example:
               xmatrix -program 'echo Hello World'
               xmatrix -ascii -program 'ps -eo comm | rev'
               xmatrix -program 'od -txC -w6 /dev/random'
               xmatrix -program 'cat /dev/random'

ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
               to  get  the  name of a resource file that overrides the global
               resources stored in the RESOURCE_MANAGER property.

SEE ALSO

       glmatrix(6x), X(1), xscreensaver(1)

COPYRIGHT

       Copyright (C) 1999-2003 by Jamie Zawinski.  Permission  to  use,  copy,
       modify,  distribute,  and  sell this software and its documentation for
       any purpose is hereby granted without  fee,  provided  that  the  above
       copyright  notice  appear  in  all  copies and that both that copyright
       notice and this permission notice appear in  supporting  documentation.
       No  representations are made about the suitability of this software for
       any purpose.  It  is  provided  "as  is"  without  express  or  implied
       warranty.

AUTHOR

       Jamie Zawinski <jwz@jwz.org>, 25-Apr-99.