19b50d902SRodney W. Grimes.\" Copyright (c) 1986, 1991, 1993 29b50d902SRodney W. Grimes.\" The Regents of the University of California. All rights reserved. 39b50d902SRodney W. Grimes.\" 49b50d902SRodney W. Grimes.\" Redistribution and use in source and binary forms, with or without 59b50d902SRodney W. Grimes.\" modification, are permitted provided that the following conditions 69b50d902SRodney W. Grimes.\" are met: 79b50d902SRodney W. Grimes.\" 1. Redistributions of source code must retain the above copyright 89b50d902SRodney W. Grimes.\" notice, this list of conditions and the following disclaimer. 99b50d902SRodney W. Grimes.\" 2. Redistributions in binary form must reproduce the above copyright 109b50d902SRodney W. Grimes.\" notice, this list of conditions and the following disclaimer in the 119b50d902SRodney W. Grimes.\" documentation and/or other materials provided with the distribution. 129b50d902SRodney W. Grimes.\" 3. All advertising materials mentioning features or use of this software 139b50d902SRodney W. Grimes.\" must display the following acknowledgement: 149b50d902SRodney W. Grimes.\" This product includes software developed by the University of 159b50d902SRodney W. Grimes.\" California, Berkeley and its contributors. 169b50d902SRodney W. Grimes.\" 4. Neither the name of the University nor the names of its contributors 179b50d902SRodney W. Grimes.\" may be used to endorse or promote products derived from this software 189b50d902SRodney W. Grimes.\" without specific prior written permission. 199b50d902SRodney W. Grimes.\" 209b50d902SRodney W. Grimes.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 219b50d902SRodney W. Grimes.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 229b50d902SRodney W. Grimes.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 239b50d902SRodney W. Grimes.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 249b50d902SRodney W. Grimes.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 259b50d902SRodney W. Grimes.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 269b50d902SRodney W. Grimes.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 279b50d902SRodney W. Grimes.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 289b50d902SRodney W. Grimes.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 299b50d902SRodney W. Grimes.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 309b50d902SRodney W. Grimes.\" SUCH DAMAGE. 319b50d902SRodney W. Grimes.\" 329b50d902SRodney W. Grimes.\" @(#)who.1 8.2 (Berkeley) 12/30/93 33b8923d4cSWolfram Schneider.\" $Id$ 349b50d902SRodney W. Grimes.\" 359b50d902SRodney W. Grimes.Dd December 30, 1993 369b50d902SRodney W. Grimes.Dt WHO 1 379b50d902SRodney W. Grimes.Os 389b50d902SRodney W. Grimes.Sh NAME 399b50d902SRodney W. Grimes.Nm who 409b50d902SRodney W. Grimes.Nd display who is logged in 419b50d902SRodney W. Grimes.Sh SYNOPSIS 429b50d902SRodney W. Grimes.Nm who 439b50d902SRodney W. Grimes.Op Ar am I 449b50d902SRodney W. Grimes.Op Ar file 459b50d902SRodney W. Grimes.Sh DESCRIPTION 469b50d902SRodney W. GrimesThe utility 479b50d902SRodney W. Grimes.Nm who 489b50d902SRodney W. Grimesdisplays 499b50d902SRodney W. Grimesa list of all users currently logged on, showing for each user 509b50d902SRodney W. Grimesthe login name, 519b50d902SRodney W. Grimestty name, the date and time of login, and hostname if not local. 529b50d902SRodney W. Grimes.Pp 539b50d902SRodney W. GrimesAvailable options: 549b50d902SRodney W. Grimes.Pp 559b50d902SRodney W. Grimes.Bl -tag -width file 569b50d902SRodney W. Grimes.It Ar \&am I 579b50d902SRodney W. GrimesReturns the invoker's real user name. 589b50d902SRodney W. Grimes.It Ar file 599b50d902SRodney W. GrimesBy default, 609b50d902SRodney W. Grimes.Nm who 619b50d902SRodney W. Grimesgathers information from the file 629b50d902SRodney W. Grimes.Pa /var/run/utmp . 639b50d902SRodney W. GrimesAn alternate 649b50d902SRodney W. Grimes.Ar file 659b50d902SRodney W. Grimesmay be specified which is usually 669b50d902SRodney W. Grimes.Pa /var/run/wtmp 679b50d902SRodney W. Grimes(or 689b50d902SRodney W. Grimes.Pa /var/run/wtmp.[0-6] 699b50d902SRodney W. Grimesdepending on site policy as 709b50d902SRodney W. Grimes.Pa wtmp 719b50d902SRodney W. Grimescan grow quite large and daily versions may or may not 729b50d902SRodney W. Grimesbe kept around after compression by 739b50d902SRodney W. Grimes.Xr ac 8 ) . 749b50d902SRodney W. GrimesThe 759b50d902SRodney W. Grimes.Pa wtmp 769b50d902SRodney W. Grimesfile contains a record of every login, logout, 779b50d902SRodney W. Grimescrash, shutdown and date change 789b50d902SRodney W. Grimessince 799b50d902SRodney W. Grimes.Pa wtmp 809b50d902SRodney W. Grimeswas last truncated or 819b50d902SRodney W. Grimescreated. 829b50d902SRodney W. Grimes.El 839b50d902SRodney W. Grimes.Pp 849b50d902SRodney W. GrimesIf 859b50d902SRodney W. Grimes.Pa /var/log/wtmp 869b50d902SRodney W. Grimesis being used as the file, the user name may be empty 879b50d902SRodney W. Grimesor one of the special characters '|', '}' and '~'. Logouts produce 889b50d902SRodney W. Grimesan output line without any user name. For more information on the 899b50d902SRodney W. Grimesspecial characters, see 909b50d902SRodney W. Grimes.Xr utmp 5 . 919b50d902SRodney W. Grimes.Sh FILES 929b50d902SRodney W. Grimes.Bl -tag -width /var/log/wtmp.[0-6] -compact 939b50d902SRodney W. Grimes.It Pa /var/run/utmp 949b50d902SRodney W. Grimes.It Pa /var/log/wtmp 959b50d902SRodney W. Grimes.It Pa /var/log/wtmp.[0-6] 969b50d902SRodney W. Grimes.El 979b50d902SRodney W. Grimes.Sh SEE ALSO 989b50d902SRodney W. Grimes.Xr last 1 , 999b50d902SRodney W. Grimes.Xr users 1 , 1009b50d902SRodney W. Grimes.Xr getuid 2 , 1019b50d902SRodney W. Grimes.Xr utmp 5 1029b50d902SRodney W. Grimes.Sh HISTORY 1039b50d902SRodney W. GrimesA 1049b50d902SRodney W. Grimes.Nm 1059b50d902SRodney W. Grimescommand appeared in 106b8923d4cSWolfram Schneider.At v1 . 107