nnrpd(8) on Linux
The text 4d2511be8333, as Debian 12 (Bookworm) shipped it.
NNTP server for reader clients
Flags it lists
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-4 -
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-B -
-D -
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-P -
-S -
-b -
-c -
-f -
-i -
-n -
-o -
-p -
-r -
-s -
-t