changetrack(1) on Linux
The text c8d99a6cc961, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
track changes to files
Flags it lists
-
-M -
-c -
-d -
-e -
-f -
-h -
-m -
-o -
-q -
-r -
-u -
-v