radiusd(8) on Linux
The text 44fa4cb66e80, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
RADIUS authentication/accounting server
Flags it lists
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-a -
-b -
-d -
-f -
-h -
-i -
-l -
-o -
-p -
-q -
-s -
-t -
-v -
-w -
-x