nnrpd(8) on Linux
The text e3b76b9abb5f, as Debian 13 (Trixie) shipped it.
NNTP server for reader clients
Flags it lists
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-4 -
-6 -
-B -
-D -
-I -
-P -
-S -
-b -
-c -
-f -
-i -
-n -
-o -
-p -
-r -
-s -
-t