boing(6x) on Linux
The text 233c77a1dd23, as Debian 11 (Bullseye) shipped it.
draws a bouncing ball like the ancient Amiga demo
Flags it lists
-
-angle -
-delay -
-fps -
-install -
-lighting -
-no-spin -
-parallels -
-root -
-scanlines -
-size -
-smooth -
-speed -
-visual -
-window -
-wireframe