unicrud(6x) on Linux
The text f38432664e4f, as Debian 9 (Stretch) shipped it.
Bounces a random Unicode character on the screen.
Flags it lists
-
-block -
-delay -
-fps -
-no-fps -
-no-roll -
-no-wander -
-roll -
-root -
-speed -
-visual -
-wander -
-window