1.\" $NetBSD: utmpx.5,v 1.6 2007/01/31 15:41:37 njoly Exp $ 2.\" 3.\" Copyright (c) 2002 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Thomas Klausner. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd January 31, 2007 38.Dt UTMPX 5 39.Os 40.Sh NAME 41.Nm utmpx , 42.Nm wtmpx , 43.Nm lastlogx 44.Nd user accounting database 45.Sh SYNOPSIS 46.In utmpx.h 47.Sh DESCRIPTION 48In contrast to 49.Pa utmp 50and 51.Pa wtmp , 52the extended databases in 53.Pa utmpx 54and 55.Pa wtmpx 56reserve more space for logging hostnames, and also 57information on a process' ID, termination signal and exit status. 58.Pp 59The 60.Aq Pa utmpx.h 61header defines the structures and functions for logging user. 62Currently logged in users are tracked in 63.Pa /var/run/utmpx , 64a list of all logins and logouts, as well as all shutdowns, reboots 65and date changes, is kept in 66.Pa /var/log/wtmpx , 67and the last login of each user is noted in 68.Pa /var/log/lastlogx . 69.Pp 70The interface to the 71.Nm utmpx 72file is described in 73.Xr getutxent 3 . 74.Pp 75The 76.Nm wtmpx 77file can grow rapidly on busy systems, and is normally rotated with 78.Xr newsyslog 8 . 79.Pp 80In the event of a date change, a shutdown, or a reboot, the following 81items are logged in the 82.Nm wtmpx 83file: 84.Bl -tag -width shutdownxx -compact -offset indent 85.It Li date 86The system time has been manually or automatically updated by 87.Xr date 1 . 88The command name 89.Em date 90is recorded in the field 91.Fa ut_name . 92In the field 93.Fa ut_line , 94the character 95.Ql \\*(Ba 96indicates the time prior to the change, and the character 97.Ql \&{ 98indicates the new time. 99.It Li reboot 100.It Li shutdown 101A system reboot or shutdown has been initiated. 102The character 103.Ql \&~ 104is placed in the field 105.Fa ut_line , 106and 107.Li reboot 108or 109.Li shutdown 110in the field 111.Fa ut_name 112(see 113.Xr shutdown 8 114and 115.Xr reboot 8 ) , 116using 117.Xr logwtmpx 3 . 118.Pp 119.El 120.Sh FILES 121.Bl -tag -width /var/log/lastlogx -compact 122.It Pa /var/run/utmpx 123The 124.Nm utmpx 125file. 126.It Pa /var/log/wtmpx 127The 128.Nm wtmpx 129file. 130.It Pa /var/log/lastlogx 131The 132.Nm lastlogx 133file. 134.El 135.Sh SEE ALSO 136.Xr last 1 , 137.Xr login 1 , 138.Xr rwho 1 , 139.Xr w 1 , 140.Xr who 1 , 141.Xr endutxent 3 , 142.Xr logwtmpx 3 , 143.Xr utmp 5 , 144.Xr ac 8 , 145.Xr init 8 , 146.Xr newsyslog 8 , 147.Xr reboot 8 148