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4.20 Finger Protocol

Finger is a draft standard protocol. Its status
is elective. The current finger specification can be found in RFC
1288 - The Finger User Information Protocol.

The finger command displays information about users of
a remote host. Finger is a UNIX command. Its format is:

finger user@host

or

finger @host

The information provided by the finger command about a user depends on the
implementation of the finger server. If a user is not specified, the
information will typically be a list of all users currently logged on to this
host.

Connections are established through TCP port 79 (decimal). The client sends
an ASCII command string, ending with <CRLF>. The server responds with one
or more ASCII strings, until the server closes the connection.

4.20.0.1 Implementations

AIX systems have both the client finger command and the server fingerd
daemon. TCP/IP for DOS and TCP/IP for OS/2 implementations provide the client
finger function.

Whois
Protocol