eruption - Man Page

eruption of pieces of hot volcanic rock


Eruption [-display host:display.screen] [-visual visual] [-window] [-root] [-ncolors number] [-nParticles number] [-Heat number] [-Cooling number] [-Gravity number] [-delay number] [-cycles number] [-fps]


This hack creates an eruption of pieces of hot volcanic rock.


-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.


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


Draw on the root window.

-ncolors number

Number of Colors.  Default: 256.

-particles number

Number of Particles. Default: 300.

-cooloff number

Eruption Cooloff. Default: 2.

-heat number

Heat of Eruption. Default: 256.

-gravity number

Gravity. Default: 1.

-delay number

Per-frame delay, in microseconds.  Default: 5000 (0.01 seconds.).

-cycles number

Duration.  10 - 3000.  Default: 80.


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),


W.P. van Paassen


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