oggCat(1) on Linux
The text 47f0401a48b4, as Debian 8 (Jessie) shipped it.
concatenates two ogg video files (.ogv, .ogg or oga)
Flags it lists
-
-C -
-D -
-F -
-c -
-d -
-f -
-q -
-rv -
-s -
-x