remote user information server
The fingerd command
implements the server side of the Name/Finger protocol,
The Name/Finger protocol provides a remote interface to programs
which display information on system status and individual users.
The protocol imposes little structure on the format of the
exchange between client and server.
The client provides a single command line to the finger
server which returns a printable reply.
who is logged in
for users' names
last login times
waits for connections on
Once connected it reads a single command line
terminated by a
which is passed to
fingerd closes its connections as soon as the output is finished.
If the line is null (only a
is sent) then
returns a default report that lists all users logged into
the system at that moment.
If a user name is specified (for instance, eric
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.
Connecting directly to the server from a
or an equally narrow-minded
protocol user program can result
in meaningless attempts at option negotiation being sent to the
server, which will foul up the command line interpretation.
should be taught to filter out
and perhaps even respond
negatively (IAC will not)
to all option commands received.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004