changetrack(1) on Linux
The text 90867af19776, as Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
track changes to configuration files
Flags it lists
-
-M -
-c -
-d -
-e -
-f -
-h -
-m -
-o -
-q -
-r -
-u -
-v