phosphor(6x)

1phosphor(6x)                  XScreenSaver manual                 phosphor(6x)
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NAME

6       phosphor - simulates an old terminal with long-sustain phosphor
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SYNOPSIS

9       phosphor  [-display  host:display.screen]  [-window] [-root] [-install]
10       [-visual visual] [-font font] [-scale int] [-ticks int] [-delay  usecs]
11       [-program command] [-meta] [-esc] [-bs] [-del] [-fps]
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DESCRIPTION

14       The phosphor program draws text on the screen in a very large pixelated
15       font that looks like an old low resolution dumb tty.  The pixels  flare
16       and  fade  out  as if the phosphor was very long-sustain.  It is also a
17       fully functional vt100 terminal emulator.
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OPTIONS

20       phosphor accepts the following options:
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22       -window Draw on a newly-created window.  This is the default.
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24       -root   Draw on the root window.
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26       -install
27               Install a private colormap for the window.
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29       -visual visual
30               Specify which visual to use.  Legal values are the  name  of  a
31               visual  class,  or the id number (decimal or hex) of a specific
32               visual.
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34       -font font-name
35               The X font to use.  Phosphor can take any font and scale it  up
36               to pixelate it.  The default is fixed.
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38       -scale int
39               How much to scale the font up: in other words, the size in real
40               pixels of the simulated pixels.  Default 6.
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42       -ticks int
43               The number of colors to use when fading to black.  Default 20.
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45       -delay usecs
46               The speed of the terminal: how long  to  wait  between  drawing
47               each character.  Default 50000, or about 1/20th second.
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49       -pty    Launch  the sub-program under a PTY, so that it can address the
50               screen directly.  This is the default.
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52       -pipe   Launch the sub-program at the end of a  pipe:  do  not  let  it
53               address the screen directly.
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55       -program sh-command
56               The  command  to  run  to  generate  the text to display.  This
57               option may be any string acceptable to  /bin/sh.   The  program
58               will  be  run  at  the end of a pty or pipe, and any characters
59               that it prints to stdout will be printed on phosphor's  window.
60               The  characters will be printed artificially slowly, as per the
61               -delay option above.  If the program exits, it will be launched
62               again after 5 seconds.
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64               For example:
65               phosphor -program 'cat /usr/src/linux*/README'
66               phosphor -program 'ping localhost'
67               phosphor -program 'ps -e'
68               phosphor -program 'od -txC -w6 /dev/random'
69               phosphor -program 'cat /dev/random'
70               phosphor -scale 2 -geom =1280x1024 -program 'top'
71               phosphor -scale 4 -geom =1280x1024 \
72                        -program 'mtr www.kernel.org'
73               phosphor -program 'xemacs -nw -q -f life'
74               phosphor -scale 5 -geom =1280x1024 \
75                        -program 'xemacs -nw -q --eval "(hanoi 5)"'
76               If  you  have  the festival(1) text-to-speech system installed,
77               you can have it read the screen as phosphor prints it:
78               phosphor -program \
79                   'xscreensaver-text | tee /dev/stderr | festival --tts'
80               You can also use  phosphor  as  a  lo-fi  replacement  for  the
81               xterm(1) and gnome-terminal(1) terminal emulators:
82               phosphor -delay 0 -program tcsh
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84       -esc    When  the user types a key with the Alt or Meta keys held down,
85               send an ESC character first.  This is the default.
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87       -meta   When Meta or Alt are held down, set the high bit on the charac‐
88               ter instead.
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90       -del    Swap Backspace and Delete.  This is the default.
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92       -bs     Do not swap Backspace and Delete.
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94       -fps    Display the current frame rate and CPU load.
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TERMINAL EMULATION

97       By  default, phosphor allocates a pseudo-tty for the sub-process to run
98       under.  This has the desirable side effect that  the  program  will  be
99       able to use ioctl(2) to fetch information about terminal parameters and
100       window size, which many programs (such as top(1)) need to run properly.
101       phosphor  will  also  set the environment variable TERM to vt100 in the
102       child process.
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104       Any characters typed on the phosphor window will be passed along to the
105       sub-process.  (Note that this only works when running in "window" mode,
106       not when running in -root mode under xscreensaver.)
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ENVIRONMENT

109       DISPLAY to get the default host and display number.
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111       XENVIRONMENT
112               to get the name of a resource file that  overrides  the  global
113               resources stored in the RESOURCE_MANAGER property.
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115       TERM    to inform the sub-process of the type of terminal emulation.
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COPYRIGHT

123       Copyright  ©  1999 by Jamie Zawinski.  Permission to use, copy, modify,
124       distribute, and sell this software and its documentation for  any  pur‐
125       pose  is  hereby granted without fee, provided that the above copyright
126       notice appear in all copies and that both  that  copyright  notice  and
127       this  permission  notice appear in supporting documentation.  No repre‐
128       sentations are made about the suitability of this software for any pur‐
129       pose.  It is provided "as is" without express or implied warranty.
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AUTHOR

132       Jamie  Zawinski  <jwz@jwz.org>,  27-Apr-99.  Pty and vt100 emulation by
133       Fredrik Tolf <fredrik@dolda2000.com>.
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137X Version 11               5.44-2.fc32 (16-Apr-2020)              phosphor(6x)