fbgrab(1) on Linux
The text 4dccf635ba93, as Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
takes screenshots using the framebuffer device
Flags it lists
-
-? -
-b -
-c -
-d -
-f -
-h -
-i -
-s -
-w