identd(8) on Linux
The text 9bf75f53683b, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it. The page shows this text now.
TCP/IP IDENT protocol server
Flags it lists
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-E -
-I -
-N -
-V -
-b -
-d -
-e -
-h -
-i -
-m -
-n -
-o -
-w