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32 .\" @(#)fingerd.8 8.1 (Berkeley) 6/4/93
40 .Nd remote user information server
49 utility uses a simple protocol based on
51 that provides an interface to
53 at several network sites.
54 It is supposed to return a friendly,
55 human-oriented status report on either the system at the moment
56 or a particular person in depth.
57 There is no required format and the
58 protocol consists mostly of specifying a single
62 can also be used to implement other protocols in conjunction with the
73 Once connected it reads a single command line
80 utility closes its connections as soon as the output is finished.
82 If the line is null (i.e., just a
88 report that lists all people logged into
89 the system at that moment.
91 If a user name is specified (e.g.\&
94 response lists more extended information for only that particular user,
95 whether logged in or not.
98 in the command line include both
102 If a name is ambiguous, all possible derivations are returned.
104 The following options may be passed to
106 as server program arguments in
107 .Pa /etc/inetd.conf :
108 .Bl -tag -width indent
111 Queries without a user name are rejected and
112 forwarding of queries to other remote hosts is denied.
115 The name of the host originating the query is reported via
117 at LOG_NOTICE priority.
119 Use an alternate program as the local information provider.
120 The default local program
125 By specifying a customized local server,
126 this option allows a system manager
127 to have more control over what information is
128 provided to remote sites.
133 will also set the environment variable
134 .Ev FINGERD_REMOTE_HOST
135 to the name of the host making the request.
141 Connecting directly to the server from a
143 or an equally narrow-minded
144 .Tn TELNET Ns \-protocol
145 user program can result
146 in meaningless attempts at option negotiation being sent to the
147 server, which will foul up the command line interpretation.
150 utility should be taught to filter out
152 and perhaps even respond
155 to all option commands received.