projects / unix-history / blame
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1 | .\" Copyright (c) 1980 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| e6b338bd | 3 | .\" |
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4 | .\" Redistribution and use in source and binary forms are permitted |
| 5 | .\" provided that the above copyright notice and this paragraph are | |
| 6 | .\" duplicated in all such forms and that any documentation, | |
| 7 | .\" advertising materials, and other materials related to such | |
| 8 | .\" distribution and use acknowledge that the software was developed | |
| 9 | .\" by the University of California, Berkeley. The name of the | |
| 10 | .\" University may not be used to endorse or promote products derived | |
| 11 | .\" from this software without specific prior written permission. | |
| 12 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 13 | .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 14 | .\" WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| e6b338bd | 15 | .\" |
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16 | .\" @(#)fingerd.8 6.2 (Berkeley) %G% |
| 17 | .\" | |
| 18 | .TH FINGERD 8 "" | |
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19 | .UC 6 |
| 20 | .SH NAME | |
| 21 | fingerd \- remote user information server | |
| 22 | .SH SYNOPSIS | |
| 23 | .B /etc/fingerd | |
| 24 | .SH DESCRIPTION | |
| 25 | .I Fingerd | |
| 26 | is a simple protocol based on RFC742 that provides an interface to the | |
| 27 | Name and Finger programs at several network sites. | |
| 28 | The program is supposed to return a friendly, | |
| 29 | human-oriented status report on either the system at the moment | |
| 30 | or a particular person in depth. | |
| 31 | There is no required format and the | |
| 32 | protocol consists mostly of specifying a single ``command line''. | |
| 33 | .PP | |
| 34 | .I Fingerd | |
| 35 | listens for TCP requests at port 79. | |
| 36 | Once connected it reads a single command line | |
| 37 | terminated by a <CRLF> which is passed to | |
| 38 | .IR finger (1). | |
| 39 | .I Fingerd | |
| 40 | closes its connections as soon as the output is finished. | |
| 41 | .PP | |
| 42 | If the line is null (i.e. just a <CRLF> is sent) then | |
| 43 | .I finger | |
| 44 | returns a ``default'' report that lists all people logged into | |
| 45 | the system at that moment. | |
| 46 | .PP | |
| 47 | If a user name is specified (e.g. eric<CRLF>) then the | |
| 48 | response lists more extended information for only that particular user, | |
| 49 | whether logged in or not. | |
| 50 | Allowable ``names'' in the command line include both ``login names'' | |
| 51 | and ``user names''. | |
| 52 | If a name is ambiguous, all possible derivations are returned. | |
| 53 | .SH SEE ALSO | |
| 54 | finger(1) | |
| 55 | .SH BUGS | |
| 56 | Connecting directly to the server from a TIP | |
| 57 | or an equally narrow-minded TELNET-protocol user program can result | |
| 58 | in meaningless attempts at option negotiation being sent to the | |
| 59 | server, which will foul up the command line interpretation. | |
| 60 | .I Fingerd | |
| 61 | should be taught to filter out IAC's and perhaps even respond | |
| 62 | negatively (IAC WON'T) to all option commands received. |