fingerd man page on Minix

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FINGERD(8)							    FINGERD(8)

NAME
       fingerd, in.fingerd - remote user information server

SYNOPSIS
       finger stream tcp nowait nobody /usr/sbin/in.fingerd in.fingerd
       tcpd finger /usr/sbin/in.fingerd in.fingerd

DESCRIPTION
       Fingerd is a simple protocol based on RFC742 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 listens for TCP requests at port 79.  Once connected it reads a
       single  command	line  terminated  by  a <CRLF> which is passed to fin‐
       ger(1).	Fingerd closes its connections as soon as the output  is  fin‐
       ished.

       If  the line is null (i.e. just a <CRLF> is sent) then finger returns a
       ``default'' report that lists all people logged into the system at that
       moment.

       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 possi‐
       ble derivations are returned.

SEE ALSO
       finger(1).

BUGS
       Connecting  directly  to	 the  server  from a TIP or an equally narrow-
       minded TELNET-protocol user program can result in meaningless  attempts
       at  option negotiation being sent to the server, which will foul up the
       command line interpretation.  Fingerd should be taught  to  filter  out
       IAC's  and  perhaps  even  respond negatively (IAC WON'T) to all option
       commands received.

4.3 Berkeley Distribution	 May 23, 1986			    FINGERD(8)
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