\"      $NetBSD: utmpx.5,v 1.8 2010/03/22 18:58:32 joerg Exp $
\"
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\" This code is derived from software contributed to The NetBSD Foundation
\" by Thomas Klausner.
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Dd January 31, 2007
Dt UTMPX 5
Os
Sh NAME
Nm utmpx ,
Nm wtmpx ,
Nm lastlogx
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
In utmpx.h
header defines the structures and functions for logging user.
Currently logged in users are tracked in
Pa /var/run/utmpx ,
a list of all logins and logouts, as well as all shutdowns, reboots
and date changes, is kept in
Pa /var/log/wtmpx ,
and the last login of each user is noted in
Pa /var/log/lastlogx .
Pp
The interface to the
Nm utmpx
file is described in
Xr getutxent 3 .
Pp
The
Nm wtmpx
file can grow rapidly on busy systems, and is normally rotated with
Xr newsyslog 8 .
Pp
In the event of a date change, a shutdown, or a reboot, the following
items are logged in the
Nm wtmpx
file:
Bl -tag -width shutdownxx -compact -offset indent
It Li date
The system time has been manually or automatically updated by
Xr date 1 .
The command name
Em date
is recorded in the field
Fa ut_name .
In the field
Fa ut_line ,
the character
Ql \\*(Ba
indicates the time prior to the change, and the character
Ql \&{
indicates the new time.
It Li reboot
It Li shutdown
A system reboot or shutdown has been initiated.
The character
Ql \&~
is placed in the field
Fa ut_line ,
and
Li reboot
or
Li shutdown
in the field
Fa ut_name
(see
Xr shutdown 8
and
Xr reboot 8 ) ,
using
Xr logwtmpx 3 .
Pp
El
Sh FILES
Bl -tag -width /var/log/lastlogx -compact
It Pa /var/run/utmpx
The
Nm utmpx
file.
It Pa /var/log/wtmpx
The
Nm wtmpx
file.
It Pa /var/log/lastlogx
The
Nm lastlogx
file.
El
Sh SEE ALSO
Xr last 1 ,
Xr login 1 ,
Xr rwho 1 ,
Xr w 1 ,
Xr who 1 ,
Xr endutxent 3 ,
Xr logwtmpx 3 ,
Xr utmp 5 ,
Xr ac 8 ,
Xr init 8 ,
Xr newsyslog 8 ,
Xr reboot 8