unicrud(6x) on Linux
The text 33c08fabb31b, as Debian 12 (Bookworm) shipped it.
Bounces a random Unicode character on the screen.
Flags it lists
-
--block -
--delay -
--fps -
--no-fps -
--no-roll -
--no-titles -
--no-wander -
--roll -
--root -
--speed -
--titles -
--visual -
--wander -
--window -
--window-id