.\" $NetBSD: utmpx.5,v 1.7 2008/04/30 13:10:57 martin Exp $ .\" .\" Copyright (c) 2002 The NetBSD Foundation, Inc. .\" All rights reserved. .\" .\" This code is derived from software contributed to The NetBSD Foundation .\" by Thomas Klausner. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR .\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" .Dd January 31, 2007 .Dt UTMPX 5 .Os .Sh NAME .Nm utmpx .Nd user accounting database .Sh SYNOPSIS .In utmpx.h .Sh DESCRIPTION In contrast to .Pa utmp and .Pa wtmp , the extended databases in .Pa utmpx and .Pa wtmpx reserve more space for logging hostnames, and also information on a process' ID, termination signal and exit status. .Pp The .Aq Pa utmpx.h header defines the structures and functions for logging user. Currently logged in users are tracked in .Pa /var/run/utmpx . The interface to the .Nm utmpx file is described in .Xr endutxent 3 . The file is not automatically created if they do not exist; it must be created manually. .Pp Traditionally, separate files would be used to store the running log of the logins and logouts .Pf ( Pa wtmpx ) , and the last login of each user .Pf ( Pa lastlogx ) . With the availability of the Apple system log facility .Xr asl 3 , these separate files can be replace with log entries, which are automatically generated when .Nm utmpx entries are written. The API to access the logins and logouts is described in .Xr endutxent_wtmp 3 while the last login info is accessible with .Xr getlastlogx 3 . .Pp For compatibility, changes to .Nm utmpx are reflected in .Xr utmp 3 (in the .Pa utmp , .Pa wtmp and .Pa lastlog files), but not the other way around. .Sh FILES .Bl -tag -width /var/log/utmpx -compact .It Pa /var/run/utmpx The .Nm utmpx file. .El .Sh SEE ALSO .Xr asl 3 , .Xr endutxent 3 , .Xr endutxent_wtmp 3 , .Xr getlastlogx 3 , .Xr utmp 5