1.\" Copyright (c) 1989, 1990, 1993, 1994 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)finger.1 8.3 (Berkeley) 5/5/94 29.\" $FreeBSD: src/usr.bin/finger/finger.1,v 1.9.2.12 2003/02/25 20:31:18 trhodes Exp $ 30.\" $DragonFly: src/usr.bin/finger/finger.1,v 1.4 2004/09/03 19:13:23 dillon Exp $ 31.\" 32.Dd August 30, 2004 33.Dt FINGER 1 34.Os 35.Sh NAME 36.Nm finger 37.Nd user information lookup program 38.Sh SYNOPSIS 39.Nm 40.Op Fl 468glmpshoT 41.Op Ar user ...\& 42.Op Ar user@host ...\& 43.Sh DESCRIPTION 44The 45.Nm 46utility displays information about the system users. 47.Pp 48Options are: 49.Bl -tag -width indent 50.It Fl 4 51Forces 52.Nm 53to use IPv4 addresses only. 54.It Fl 6 55Forces 56.Nm 57to use IPv6 addresses only. 58.It Fl 8 59Pass through 8-bit data. This option is intended for enabling 8-bit 60data output in the 61.Xr fingerd 8 62service. Using this from the command line is 63.Em dangerous , 64as the output data may include control characters for your terminal. 65.It Fl s 66Display the user's login name, real name, terminal name and write 67status (as a ``*'' before the terminal name if write permission is 68denied), idle time, login time, and either office location and office 69phone number, or the remote host. 70If 71.Fl o 72is given, the office location and office phone number is printed 73(the default). 74If 75.Fl h 76is given, the remote host is printed instead. 77.Pp 78Idle time is in minutes if it is a single integer, hours and minutes 79if a ``:'' is present, or days if a ``d'' is present. 80If it is an 81.Dq * , 82the login time indicates the time of last login. 83Login time is displayed as the day name if less than 6 days, else month, day; 84hours and minutes, unless more than six months ago, in which case the year 85is displayed rather than the hours and minutes. 86.Pp 87Unknown devices as well as nonexistent idle and login times are 88displayed as single asterisks. 89.It Fl h 90When used in conjunction with the 91.Fl s 92option, the name of the remote host is displayed instead of the office 93location and office phone. 94.It Fl o 95When used in conjunction with the 96.Fl s 97option, the office location and office phone information is displayed 98instead of the name of the remote host. 99.It Fl g 100This option restricts the gecos output to only the users' real 101name. 102It also has the side-effect of restricting the output 103of the remote host when used in conjunction with the 104.Fl h 105option. 106.It Fl l 107Produce a multi-line format displaying all of the information 108described for the 109.Fl s 110option as well as the user's home directory, home phone number, login 111shell, mail status, and the contents of the files 112.Pa .forward , 113.Pa .plan , 114.Pa .project 115and 116.Pa .pubkey 117from the user's home directory. 118.Pp 119If idle time is at least a minute and less than a day, it is 120presented in the form ``hh:mm''. 121Idle times greater than a day are presented as ``d day[s]hh:mm''. 122.Pp 123Phone numbers specified as eleven digits are printed as ``+N-NNN-NNN-NNNN''. 124Numbers specified as ten or seven digits are printed as the appropriate 125subset of that string. 126Numbers specified as five digits are printed as ``xN-NNNN''. 127Numbers specified as four digits are printed as ``xNNNN''. 128.Pp 129If write permission is denied to the device, the phrase ``(messages off)'' 130is appended to the line containing the device name. 131One entry per user is displayed with the 132.Fl l 133option; if a user is logged on multiple times, terminal information 134is repeated once per login. 135.Pp 136Mail status is shown as ``No Mail.'' if there is no mail at all, ``Mail 137last read DDD MMM ## HH:MM YYYY (TZ)'' if the person has looked at their 138mailbox since new mail arriving, or ``New mail received ...'', ``Unread 139since ...'' if they have new mail. 140.It Fl p 141Prevent 142the 143.Fl l 144option of 145.Nm 146from displaying the contents of the 147.Pa .forward , 148.Pa .plan , 149.Pa .project 150and 151.Pa .pubkey 152files. 153.It Fl m 154Prevent matching of 155.Ar user 156names. 157.Ar User 158is usually a login name; however, matching will also be done on the 159users' real names, unless the 160.Fl m 161option is supplied. 162All name matching performed by 163.Nm 164is case insensitive. 165.It Fl T 166Disable the piggybacking of data on the initial connection request. 167This option is needed to finger hosts with a broken TCP implementation. 168.El 169.Pp 170If no options are specified, 171.Nm 172defaults to the 173.Fl l 174style output if operands are provided, otherwise to the 175.Fl s 176style. 177Note that some fields may be missing, in either format, if information 178is not available for them. 179.Pp 180If no arguments are specified, 181.Nm 182will print an entry for each user currently logged into the system. 183.Pp 184The 185.Nm 186utility may be used to look up users on a remote machine. 187The format is to specify a 188.Ar user 189as 190.Dq Li user@host , 191or 192.Dq Li @host , 193where the default output 194format for the former is the 195.Fl l 196style, and the default output format for the latter is the 197.Fl s 198style. 199The 200.Fl l 201option is the only option that may be passed to a remote machine. 202.Pp 203If the file 204.Pa .nofinger 205exists in the user's home directory, 206.Nm 207behaves as if the user in question does not exist. 208.Pp 209The optional 210.Xr finger.conf 5 211configuration file can be used to specify aliases. 212Since 213.Nm 214is invoked by 215.Xr fingerd 8 , 216aliases will work for both local and network queries. 217.Sh ENVIRONMENT 218The 219.Nm 220utility utilizes the following environment variable, if it exists: 221.Bl -tag -width Fl 222.It Ev FINGER 223This variable may be set with favored options to 224.Nm . 225.El 226.Sh FILES 227.Bl -tag -width /var/log/lastlog -compact 228.It Pa /etc/finger.conf 229alias definition data base 230.It Pa /var/log/lastlog 231last login data base 232.El 233.Sh SEE ALSO 234.Xr chpass 1 , 235.Xr w 1 , 236.Xr who 1 , 237.Xr finger.conf 5 , 238.Xr fingerd 8 239.Rs 240.%A D. Zimmerman 241.%T The Finger User Information Protocol 242.%R RFC 1288 243.%D December, 1991 244.Re 245.Sh HISTORY 246The 247.Nm 248command appeared in 249.Bx 3.0 . 250.Sh BUGS 251The current FINGER protocol RFC requires that the client keep the connection 252fully open until the server closes. 253This prevents the use of the optimal 254three-packet T/TCP exchange. 255(Servers which depend on this requirement are 256bogus but have nonetheless been observed in the Internet at large.) 257