htpasswd(1) on Linux
The text 7cb869b5df85, as Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
Manage user files for basic authentication
Flags it lists
-
-B -
-C -
-D -
-b -
-c -
-d -
-i -
-m -
-n -
-p -
-s -
-v