cloudlife - Man Page

a cellular automaton based on Conway's Life


cloudlife [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-mono] [-install] [-visual visual] [-ncolors integer] [-cycle-delay microseconds] [-cycle-colors integer][-cell-size integer] [-initial-density integer] [-max-age integer]



The cloudlife program draws a cellular automaton based on Conway's Life, except that cells have a maximum age, and only one pixel per cell is drawn every tick.


cloudlife accepts the following options:


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


Draw on the root window.


If on a color display, pretend we're on a monochrome display.


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.

-cycle-delay integer

Time in microseconds to sleep between ticks.  Default 25000.

-cycle-colors integer

How many ticks should elapse between cycling colors.  0 to disable color cycling.  Default 2.

-ncolors integer

How many colors should be used (if possible).  Default 64. The colors are chosen randomly.

-cell-size integer

Size of each cell, in powers of 2.  Default 3 (8-pixel cells).

-initial-density integer

Percentage of cells that are alive at start and when the field is repopulated.  Default 30.  

-max-age integer

Maximum age for a cell.  Default 64.


Display the current frame rate and CPU load.



to get the default host and display number.


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

See Also

X(1), xscreensaver(1), xlock(1)


Don Marti <> 20 May 2003.  


6.04-1.fc37.1 (23-Jul-2022) X Version 11 XScreenSaver manual