surfaces(6x) on Linux
The text 3b9236d3bfad, as Debian 8 (Jessie) shipped it.
Draws some interesting 3d parametric surfaces.
Flags it lists
-
-delay -
-fps -
-no-spin -
-no-wander -
-root -
-speed -
-spin -
-visual -
-wander -
-window