/usr/bin/finger@ is in ucspi-tcp-ipv6 1:0.88-3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | #!/bin/sh
# WARNING: This file was auto-generated. Do not edit!
echo "${2-}" | /usr/bin/tcpclient -RHl0 -- "${1-0}" 79 sh -c '
/usr/bin/addcr >&7
exec /usr/bin/delcr <&6
' | cat -v
|