oidentd(8) on Linux
The text fa8e8c45b53c, as Debian 2.2 (Potato) shipped it.
TCP/IP IDENT protocol server
Flags it lists
-
-A -
-F -
-N -
-S -
-T -
-V -
-W -
-c -
-d -
-e -
-f -
-g -
-h -
-i -
-m -
-n -
-o -
-p -
-q -
-r -
-s -
-t -
-u -
-v -
-w -
-x