fbsetroot(1) on Linux
The text 7087d10a9731, as Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
a simple background utility used by the Fluxbox window manager, originally written for and by the original Blackbox window manager team.
Flags it lists
-
-background -
-bg -
-fg -
-foreground -
-help