shatagd(1) on Linux
The text 47525e6d4626, as Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
Automatically maintain hash tags for files in a given directory
Flags it lists
-
--backend -
--daemon -
--recursive -
--update -
--verbose -
-b -
-d -
-r -
-u -
-v