xprobe2(1) on Linux
The text f608781f32df, as Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
A Remote active operating system fingerprinting tool.
Flags it lists
-
-A -
-B -
-D -
-F -
-T -
-U -
-X -
-c -
-m -
-o -
-p -
-r -
-t -
-v