253 lines
7.2 KiB
Groff
253 lines
7.2 KiB
Groff
.\" Copyright (c) 1989, 1990, 1993, 1994
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)finger.1 8.3 (Berkeley) 5/5/94
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.\" $FreeBSD$
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.\"
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.Dd July 22, 2002
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.Dt FINGER 1
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.Os
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.Sh NAME
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.Nm finger
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.Nd user information lookup program
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.Sh SYNOPSIS
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.Nm
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.Op Fl 46gklmpshoT
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.Op Ar user ...\&
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.Op Ar user@host ...\&
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.Sh DESCRIPTION
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The
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.Nm
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utility displays information about the system users.
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.Pp
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Options are:
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.Bl -tag -width indent
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.It Fl 4
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Forces
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.Nm
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to use IPv4 addresses only.
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.It Fl 6
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Forces
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.Nm
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to use IPv6 addresses only.
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.It Fl s
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Display the user's login name, real name, terminal name and write
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status (as a ``*'' before the terminal name if write permission is
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denied), idle time, login time, and either office location and office
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phone number, or the remote host.
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If
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.Fl o
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is given, the office location and office phone number is printed
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(the default).
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If
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.Fl h
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is given, the remote host is printed instead.
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.Pp
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Idle time is in minutes if it is a single integer, hours and minutes
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if a ``:'' is present, or days if a ``d'' is present.
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If it is an
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.Dq * ,
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the login time indicates the time of last login.
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Login time is displayed as the day name if less than 6 days, else month, day;
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hours and minutes, unless more than six months ago, in which case the year
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is displayed rather than the hours and minutes.
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.Pp
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Unknown devices as well as nonexistent idle and login times are
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displayed as single asterisks.
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.It Fl h
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When used in conjunction with the
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.Fl s
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option, the name of the remote host is displayed instead of the office
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location and office phone.
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.It Fl o
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When used in conjunction with the
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.Fl s
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option, the office location and office phone information is displayed
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instead of the name of the remote host.
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.It Fl g
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This option restricts the gecos output to only the users' real
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name. It also has the side-effect of restricting the output
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of the remote host when used in conjunction with the
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.Fl h
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option.
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.It Fl k
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Disable all use of
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.Xr utmp 5 .
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.It Fl l
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Produce a multi-line format displaying all of the information
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described for the
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.Fl s
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option as well as the user's home directory, home phone number, login
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shell, mail status, and the contents of the files
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.Pa .forward ,
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.Pa .plan ,
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.Pa .project
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and
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.Pa .pubkey
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from the user's home directory.
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.Pp
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If idle time is at least a minute and less than a day, it is
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presented in the form ``hh:mm''.
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Idle times greater than a day are presented as ``d day[s]hh:mm''.
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.Pp
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Phone numbers specified as eleven digits are printed as ``+N-NNN-NNN-NNNN''.
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Numbers specified as ten or seven digits are printed as the appropriate
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subset of that string.
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Numbers specified as five digits are printed as ``xN-NNNN''.
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Numbers specified as four digits are printed as ``xNNNN''.
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.Pp
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If write permission is denied to the device, the phrase ``(messages off)''
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is appended to the line containing the device name.
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One entry per user is displayed with the
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.Fl l
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option; if a user is logged on multiple times, terminal information
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is repeated once per login.
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.Pp
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Mail status is shown as ``No Mail.'' if there is no mail at all, ``Mail
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last read DDD MMM ## HH:MM YYYY (TZ)'' if the person has looked at their
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mailbox since new mail arriving, or ``New mail received ...'', ``Unread
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since ...'' if they have new mail.
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.It Fl p
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Prevent
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the
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.Fl l
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option of
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.Nm
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from displaying the contents of the
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.Pa .forward ,
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.Pa .plan ,
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.Pa .project
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and
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.Pa .pubkey
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files.
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.It Fl m
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Prevent matching of
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.Ar user
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names.
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.Ar User
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is usually a login name; however, matching will also be done on the
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users' real names, unless the
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.Fl m
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option is supplied.
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All name matching performed by
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.Nm
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is case insensitive.
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.It Fl T
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Disable the piggybacking of data on the initial connection request.
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This option is needed to finger hosts with a broken TCP implementation.
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.El
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.Pp
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If no options are specified,
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.Nm
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defaults to the
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.Fl l
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style output if operands are provided, otherwise to the
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.Fl s
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style.
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Note that some fields may be missing, in either format, if information
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is not available for them.
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.Pp
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If no arguments are specified,
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.Nm
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will print an entry for each user currently logged into the system.
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.Pp
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The
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.Nm
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utility may be used to look up users on a remote machine.
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The format is to specify a
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.Ar user
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as
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.Dq Li user@host ,
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or
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.Dq Li @host ,
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where the default output
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format for the former is the
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.Fl l
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style, and the default output format for the latter is the
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.Fl s
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style.
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The
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.Fl l
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option is the only option that may be passed to a remote machine.
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.Pp
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If the file
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.Pa .nofinger
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exists in the user's home directory,
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.Nm
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behaves as if the user in question does not exist.
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.Pp
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The optional
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.Xr finger.conf 5
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configuration file can be used to specify aliases.
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Since
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.Nm
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is invoked by
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.Xr fingerd 8 ,
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aliases will work for both local and network queries.
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.Sh ENVIRONMENT
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The
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.Nm
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utility utilizes the following environment variable, if it exists:
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.Bl -tag -width Fl
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.It Ev FINGER
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This variable may be set with favored options to
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.Nm .
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.El
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.Sh FILES
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.Bl -tag -width /var/log/lastlog -compact
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.It Pa /etc/finger.conf
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alias definition data base
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.It Pa /var/log/lastlog
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last login data base
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.El
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.Sh SEE ALSO
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.Xr chpass 1 ,
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.Xr w 1 ,
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.Xr who 1 ,
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.Xr finger.conf 5 ,
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.Xr fingerd 8
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.Rs
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.%A D. Zimmerman
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.%T The Finger User Information Protocol
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.%R RFC 1288
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.%D December, 1991
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.Re
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 3.0 .
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.Sh BUGS
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The current FINGER protocol RFC requires that the client keep the connection
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fully open until the server closes. This prevents the use of the optimal
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three-packet T/TCP exchange. (Servers which depend on this requirement are
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bogus but have nonetheless been observed in the Internet at large.)
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