gocr(1) on Linux
The text 40879d0d74b1, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
command line text recognition tool
Flags it lists
-
-C -
-a -
-c -
-d -
-e -
-f -
-h -
-i -
-l -
-m -
-n -
-o -
-p -
-s -
-u -
-v -
-x