FINGERD(8) System Manager's Manual FINGERD(8)
fingerd - remote user information server
fingerd [-lMmpSsu] [-P filename]
fingerd implements a simple protocol based on RFC 1288 that provides an
interface to the Name and Finger programs at several network sites. The
program is supposed to return a friendly, human-oriented status report on
either the system at the moment or a particular person in depth. There
is no required format and the protocol consists mostly of specifying a
single ``command line''.
fingerd is started by inetd(8), which listens for TCP requests at port
79. Once connected it reads a single command line terminated by a <CRLF>
which is passed to finger(1). fingerd closes its connections as soon as
the output is finished.
If the line is null (i.e., just a <CRLF> is sent) then finger(1) returns
a ``default'' report that lists all people logged into the system at that
If a user name is specified (e.g., eric<CRLF>) then the response lists
more extended information for only that particular user, whether logged
in or not. Allowable ``names'' in the command line include both ``login
names'' and ``user names''. If a name is ambiguous, all possible
derivations are returned.
The following options may be passed to fingerd as server program
arguments in /etc/inetd.conf:
-l Enable logging. The name of the host originating the query and
the actual request is reported via syslog(3) at LOG_NOTICE
priority. A request of the form `/W' or `/w' will return long
output. Empty requests will return all currently logged in
users. All other requests look for specific users. See RFC 1288
-M Enables matching of user names. This is disabled by default if
the system is running YP.
-m Prevent matching of user names. User is usually a login name;
however, matching will also be done on the users' real names,
unless the -m option is supplied.
Use an alternate program as the local information provider. The
default local program executed by fingerd is finger(1). By
specifying a customized local server, this option allows a system
manager to have more control over what information is provided to
-p Prevents finger(1) from displaying the contents of the ``.plan''
and ``.project'' files.
-S Prints user information in short mode, one line per user. This
overrides the ``Whois switch'' that may be passed in from the
-s Enable secure mode. Forwarding of queries to other remote hosts
-u Queries without a user name are rejected.
D. Zimmerman, The Finger User Information Protocol, RFC 1288, December
The fingerd command appeared in 4.3BSD.
OpenBSD 5.7 January 15, 2015 OpenBSD 5.7
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