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.\" 31.Dd September 11, 2019 32.Dt FINGER 1 33.Os 34.Sh NAME 35.Nm finger 36.Nd user information lookup program 37.Sh SYNOPSIS 38.Nm 39.Op Fl 468glmpsho 40.Op Ar user ...\& 41.Op Ar user@host ...\& 42.Sh DESCRIPTION 43The 44.Nm 45utility displays information about the system users. 46.Pp 47Options are: 48.Bl -tag -width indent 49.It Fl 4 50Forces 51.Nm 52to use IPv4 addresses only. 53.It Fl 6 54Forces 55.Nm 56to use IPv6 addresses only. 57.It Fl 8 58Pass through 8-bit data. This option is intended for enabling 8-bit 59data output in the 60.Xr fingerd 8 61service. Using this from the command line is 62.Em dangerous , 63as the output data may include control characters for your terminal. 64.It Fl s 65Display the user's login name, real name, terminal name and write 66status (as a ``*'' before the terminal name if write permission is 67denied), idle time, login time, and either office location and office 68phone number, or the remote host. 69If 70.Fl o 71is given, the office location and office phone number is printed 72(the default). 73If 74.Fl h 75is given, the remote host is printed instead. 76.Pp 77Idle time is in minutes if it is a single integer, hours and minutes 78if a ``:'' is present, or days if a ``d'' is present. 79If it is an 80.Dq * , 81the login time indicates the time of last login. 82Login time is displayed as the day name if less than 6 days, else month, day; 83hours and minutes, unless more than six months ago, in which case the year 84is displayed rather than the hours and minutes. 85.Pp 86Unknown devices as well as nonexistent idle and login times are 87displayed as single asterisks. 88.It Fl h 89When used in conjunction with the 90.Fl s 91option, the name of the remote host is displayed instead of the office 92location and office phone. 93.It Fl o 94When used in conjunction with the 95.Fl s 96option, the office location and office phone information is displayed 97instead of the name of the remote host. 98.It Fl g 99This option restricts the gecos output to only the users' real 100name. 101It also has the side-effect of restricting the output 102of the remote host when used in conjunction with the 103.Fl h 104option. 105.It Fl l 106Produce a multi-line format displaying all of the information 107described for the 108.Fl s 109option as well as the user's home directory, home phone number, login 110shell, mail status, and the contents of the files 111.Pa .forward , 112.Pa .plan , 113.Pa .project 114and 115.Pa .pubkey 116from the user's home directory. 117.Pp 118If idle time is at least a minute and less than a day, it is 119presented in the form ``hh:mm''. 120Idle times greater than a day are presented as ``d day[s]hh:mm''. 121.Pp 122Phone numbers specified as eleven digits are printed as ``+N-NNN-NNN-NNNN''. 123Numbers specified as ten or seven digits are printed as the appropriate 124subset of that string. 125Numbers specified as five digits are printed as ``xN-NNNN''. 126Numbers specified as four digits are printed as ``xNNNN''. 127.Pp 128If write permission is denied to the device, the phrase ``(messages off)'' 129is appended to the line containing the device name. 130One entry per user is displayed with the 131.Fl l 132option; if a user is logged on multiple times, terminal information 133is repeated once per login. 134.Pp 135Mail status is shown as ``No Mail.'' if there is no mail at all, ``Mail 136last read DDD MMM ## HH:MM YYYY (TZ)'' if the person has looked at their 137mailbox since new mail arriving, or ``New mail received ...'', ``Unread 138since ...'' if they have new mail. 139.It Fl p 140Prevent 141the 142.Fl l 143option of 144.Nm 145from displaying the contents of the 146.Pa .forward , 147.Pa .plan , 148.Pa .project 149and 150.Pa .pubkey 151files. 152.It Fl m 153Prevent matching of 154.Ar user 155names. 156.Ar User 157is usually a login name; however, matching will also be done on the 158users' real names, unless the 159.Fl m 160option is supplied. 161All name matching performed by 162.Nm 163is case insensitive. 164.El 165.Pp 166If no options are specified, 167.Nm 168defaults to the 169.Fl l 170style output if operands are provided, otherwise to the 171.Fl s 172style. 173Note that some fields may be missing, in either format, if information 174is not available for them. 175.Pp 176If no arguments are specified, 177.Nm 178will print an entry for each user currently logged into the system. 179.Pp 180The 181.Nm 182utility may be used to look up users on a remote machine. 183The format is to specify a 184.Ar user 185as 186.Dq Li user@host , 187or 188.Dq Li @host , 189where the default output 190format for the former is the 191.Fl l 192style, and the default output format for the latter is the 193.Fl s 194style. 195The 196.Fl l 197option is the only option that may be passed to a remote machine. 198.Pp 199If the file 200.Pa .nofinger 201exists in the user's home directory, 202.Nm 203behaves as if the user in question does not exist. 204.Pp 205The optional 206.Xr finger.conf 5 207configuration file can be used to specify aliases. 208Since 209.Nm 210is invoked by 211.Xr fingerd 8 , 212aliases will work for both local and network queries. 213.Sh ENVIRONMENT 214The 215.Nm 216utility utilizes the following environment variable, if it exists: 217.Bl -tag -width Fl 218.It Ev FINGER 219This variable may be set with favored options to 220.Nm . 221.El 222.Sh FILES 223.Bl -tag -width /var/log/lastlogx -compact 224.It Pa /etc/finger.conf 225alias definition data base 226.It Pa /var/log/lastlogx 227last login data base 228.El 229.Sh SEE ALSO 230.Xr chpass 1 , 231.Xr w 1 , 232.Xr who 1 , 233.Xr finger.conf 5 , 234.Xr fingerd 8 235.Rs 236.%A D. Zimmerman 237.%T The Finger User Information Protocol 238.%R RFC 1288 239.%D December, 1991 240.Re 241.Sh HISTORY 242The 243.Nm 244command appeared in 245.Bx 3.0 . 246.Sh BUGS 247The current FINGER protocol RFC requires that the client keep the connection 248fully open until the server closes. 249This prevents the use of the optimal 250three-packet T/TCP exchange. 251(Servers which depend on this requirement are 252bogus but have nonetheless been observed in the Internet at large.) 253