postconf(1) on Linux
The text 69c5e2db1b0a, as Debian 8 (Jessie) shipped it.
Postfix configuration utility
Flags it lists
-
-# -
-A -
-C -
-F -
-M -
-P -
-X -
-a -
-b -
-c -
-d -
-e -
-f -
-h -
-l -
-m -
-n -
-o -
-p -
-t -
-v -
-x