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. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)finger.1 8.3 (Berkeley) 5/5/94 33.\" $FreeBSD$ 34.\" 35.Dd August 1, 1997 36.Dt FINGER 1 37.Os 38.Sh NAME 39.Nm finger 40.Nd user information lookup program 41.Sh SYNOPSIS 42.Nm 43.Op Fl 46glmpshoT 44.Op Ar user ...\& 45.Op Ar user@host ...\& 46.Sh DESCRIPTION 47The 48.Nm 49utility displays information about the system users. 50.Pp 51Options are: 52.Bl -tag -width flag 53.It Fl 4 54Forces 55.Nm 56to use IPv4 addresses only. 57.It Fl 6 58Forces 59.Nm 60to use IPv6 addresses only. 61.It Fl s 62Display the user's login name, real name, terminal name and write 63status (as a ``*'' before the terminal name if write permission is 64denied), idle time, login time, and either office location and office 65phone number, or the remote host. 66If 67.Fl o 68is given, the office location and office phone number is printed 69(the default). 70If 71.Fl h 72is given, the remote host is printed instead. 73.Pp 74Idle time is in minutes if it is a single integer, hours and minutes 75if a ``:'' is present, or days if a ``d'' is present. 76If it is an 77.Dq * , 78the login time indicates the time of last login. 79Login time is displayed as the day name if less than 6 days, else month, day; 80hours and minutes, unless more than six months ago, in which case the year 81is displayed rather than the hours and minutes. 82.Pp 83Unknown devices as well as nonexistent idle and login times are 84displayed as single asterisks. 85.Pp 86.It Fl h 87When used in conjunction with the 88.Fl s 89option, the name of the remote host is displayed instead of the office 90location and office phone. 91.Pp 92.It Fl o 93When used in conjunction with the 94.Fl s 95option, the office location and office phone information is displayed 96instead of the name of the remote host. 97.Pp 98.It Fl g 99This option restricts the gecos output to only the users' real 100name. It also has the side-effect of restricting the output 101of the remote host when used in conjunction with the 102.Fl h 103option. 104.Pp 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.Dq Pa .forward , 112.Dq Pa .plan , 113.Dq Pa .project 114and 115.Dq 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.Pp 140.It Fl p 141Prevent 142the 143.Fl l 144option of 145.Nm 146from displaying the contents of the 147.Dq Pa .forward , 148.Dq Pa .plan , 149.Dq Pa .project 150and 151.Dq 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.Pp 166.It Fl T 167Disable the piggybacking of data on the initial connection request. 168This option is needed to finger hosts with a broken TCP implementation. 169.El 170.Pp 171If no options are specified, 172.Nm 173defaults to the 174.Fl l 175style output if operands are provided, otherwise to the 176.Fl s 177style. 178Note that some fields may be missing, in either format, if information 179is not available for them. 180.Pp 181If no arguments are specified, 182.Nm 183will print an entry for each user currently logged into the system. 184.Pp 185The 186.Nm 187utility may be used to look up users on a remote machine. 188The format is to specify a 189.Ar user 190as 191.Dq Li user@host , 192or 193.Dq Li @host , 194where the default output 195format for the former is the 196.Fl l 197style, and the default output format for the latter is the 198.Fl s 199style. 200The 201.Fl l 202option is the only option that may be passed to a remote machine. 203.Pp 204If the file 205.Dq Pa .nofinger 206exists in the user's home directory, 207.Nm 208behaves as if the user in question does not exist. 209.Pp 210The optional 211.Xr finger.conf 5 212configuration file can be used to specify aliases. 213Since 214.Xr finger 1 215is invoked by 216.Xr fingerd 8 , 217aliases will work for both local and network queries. 218.Sh ENVIRONMENT 219The 220.Nm 221utility utilizes the following environment variable, if it exists: 222.Bl -tag -width Fl 223.It Ev FINGER 224This variable may be set with favored options to 225.Nm . 226.El 227.Sh FILES 228.Bl -tag -width /var/log/lastlog -compact 229.It Pa /etc/finger.conf 230alias definition data base 231.It Pa /var/log/lastlog 232last login data base 233.El 234.Sh SEE ALSO 235.Xr chpass 1 , 236.Xr w 1 , 237.Xr who 1 , 238.Xr finger.conf 5 , 239.Xr fingerd 8 240.Rs 241.%A D. Zimmerman 242.%T The Finger User Information Protocol 243.%R RFC 1288 244.%D December, 1991 245.Re 246.Sh HISTORY 247The 248.Nm 249command appeared in 250.Bx 3.0 . 251.Sh BUGS 252The current FINGER protocol RFC requires that the client keep the connection 253fully open until the server closes. This prevents the use of the optimal 254three-packet T/TCP exchange. (Servers which depend on this requirement are 255bogus but have nonetheless been observed in the Internet at large.) 256