inspectsocks(1) on Linux
The text 682af7af6a93, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
This utility can be used to determine the protocol level of a SOCKS server.