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 339b50d902SRodney W. Grimes.\" 349b50d902SRodney W. Grimes.Dd December 30, 1993 359b50d902SRodney W. Grimes.Dt WHO 1 369b50d902SRodney W. Grimes.Os 379b50d902SRodney W. Grimes.Sh NAME 389b50d902SRodney W. Grimes.Nm who 399b50d902SRodney W. Grimes.Nd display who is logged in 409b50d902SRodney W. Grimes.Sh SYNOPSIS 419b50d902SRodney W. Grimes.Nm who 429b50d902SRodney W. Grimes.Op Ar am I 439b50d902SRodney W. Grimes.Op Ar file 449b50d902SRodney W. Grimes.Sh DESCRIPTION 459b50d902SRodney W. GrimesThe utility 469b50d902SRodney W. Grimes.Nm who 479b50d902SRodney W. Grimesdisplays 489b50d902SRodney W. Grimesa list of all users currently logged on, showing for each user 499b50d902SRodney W. Grimesthe login name, 509b50d902SRodney W. Grimestty name, the date and time of login, and hostname if not local. 519b50d902SRodney W. Grimes.Pp 529b50d902SRodney W. GrimesAvailable options: 539b50d902SRodney W. Grimes.Pp 549b50d902SRodney W. Grimes.Bl -tag -width file 559b50d902SRodney W. Grimes.It Ar \&am I 569b50d902SRodney W. GrimesReturns the invoker's real user name. 579b50d902SRodney W. Grimes.It Ar file 589b50d902SRodney W. GrimesBy default, 599b50d902SRodney W. Grimes.Nm who 609b50d902SRodney W. Grimesgathers information from the file 619b50d902SRodney W. Grimes.Pa /var/run/utmp . 629b50d902SRodney W. GrimesAn alternate 639b50d902SRodney W. Grimes.Ar file 649b50d902SRodney W. Grimesmay be specified which is usually 659b50d902SRodney W. Grimes.Pa /var/run/wtmp 669b50d902SRodney W. Grimes(or 679b50d902SRodney W. Grimes.Pa /var/run/wtmp.[0-6] 689b50d902SRodney W. Grimesdepending on site policy as 699b50d902SRodney W. Grimes.Pa wtmp 709b50d902SRodney W. Grimescan grow quite large and daily versions may or may not 719b50d902SRodney W. Grimesbe kept around after compression by 729b50d902SRodney W. Grimes.Xr ac 8 ) . 739b50d902SRodney W. GrimesThe 749b50d902SRodney W. Grimes.Pa wtmp 759b50d902SRodney W. Grimesfile contains a record of every login, logout, 769b50d902SRodney W. Grimescrash, shutdown and date change 779b50d902SRodney W. Grimessince 789b50d902SRodney W. Grimes.Pa wtmp 799b50d902SRodney W. Grimeswas last truncated or 809b50d902SRodney W. Grimescreated. 819b50d902SRodney W. Grimes.El 829b50d902SRodney W. Grimes.Pp 839b50d902SRodney W. GrimesIf 849b50d902SRodney W. Grimes.Pa /var/log/wtmp 859b50d902SRodney W. Grimesis being used as the file, the user name may be empty 869b50d902SRodney W. Grimesor one of the special characters '|', '}' and '~'. Logouts produce 879b50d902SRodney W. Grimesan output line without any user name. For more information on the 889b50d902SRodney W. Grimesspecial characters, see 899b50d902SRodney W. Grimes.Xr utmp 5 . 909b50d902SRodney W. Grimes.Sh FILES 919b50d902SRodney W. Grimes.Bl -tag -width /var/log/wtmp.[0-6] -compact 929b50d902SRodney W. Grimes.It Pa /var/run/utmp 939b50d902SRodney W. Grimes.It Pa /var/log/wtmp 949b50d902SRodney W. Grimes.It Pa /var/log/wtmp.[0-6] 959b50d902SRodney W. Grimes.El 969b50d902SRodney W. Grimes.Sh SEE ALSO 979b50d902SRodney W. Grimes.Xr last 1 , 989b50d902SRodney W. Grimes.Xr users 1 , 999b50d902SRodney W. Grimes.Xr getuid 2 , 1009b50d902SRodney W. Grimes.Xr utmp 5 1019b50d902SRodney W. Grimes.Sh HISTORY 1029b50d902SRodney W. GrimesA 1039b50d902SRodney W. Grimes.Nm 1049b50d902SRodney W. Grimescommand appeared in 1059b50d902SRodney W. Grimes.At v6 . 106