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32 .\" @(#)fingerd.8 8.1 (Berkeley) 6/4/93
40 .Nd remote user information server
51 utility uses a simple protocol based on
53 that provides an interface to
55 at several network sites.
56 It is supposed to return a friendly,
57 human-oriented status report on either the system at the moment
58 or a particular person in depth.
59 There is no required format and the
60 protocol consists mostly of specifying a single
64 can also be used to implement other protocols in conjunction with the
75 Once connected it reads a single command line
82 utility closes its connections as soon as the output is finished.
84 If the line is null (i.e., just a
90 report that lists all people logged into
91 the system at that moment.
93 If a user name is specified (e.g.\&
96 response lists more extended information for only that particular user,
97 whether logged in or not.
100 in the command line include both
104 If a name is ambiguous, all possible derivations are returned.
106 The following options may be passed to
108 as server program arguments in
109 .Pa /etc/inetd.conf :
110 .Bl -tag -width indent
112 Enable debugging mode.
115 will not attempt any network-related operations on
117 and it will print the full
124 Suppress login information.
125 See the description of the
132 Queries without a user name are rejected and
133 forwarding of queries to other remote hosts is denied.
136 The name of the host originating the query is reported via
138 at LOG_NOTICE priority.
140 Use an alternate program as the local information provider.
141 The default local program
146 By specifying a customized local server,
147 this option allows a system manager
148 to have more control over what information is
149 provided to remote sites.
154 will also set the environment variable
155 .Ev FINGERD_REMOTE_HOST
156 to the name of the host making the request.
167 Connecting directly to the server from a
169 or an equally narrow-minded
170 .Tn TELNET Ns \-protocol
171 user program can result
172 in meaningless attempts at option negotiation being sent to the
173 server, which will foul up the command line interpretation.
176 utility should be taught to filter out
178 and perhaps even respond
181 to all option commands received.