UTMPX(5)                  NetBSD File Formats Manual                  UTMPX(5)


NAME
utmpx, wtmpx, lastlogx -- user accounting database
SYNOPSIS
#include <utmpx.h>
DESCRIPTION
In contrast to utmp and wtmp, the extended databases in utmpx and wtmpx reserve more space for logging hostnames, and also information on a process' ID, termination signal and exit status. The <utmpx.h> header defines the structures and functions for logging user. Currently logged in users are tracked in /var/run/utmpx, a list of all logins and logouts, as well as all shutdowns, reboots and date changes, is kept in /var/log/wtmpx, and the last login of each user is noted in /var/log/lastlogx. The interface to the utmpx file is described in getutxent(3). The wtmpx file can grow rapidly on busy systems, and is normally rotated with newsyslog(8). In the event of a date change, a shutdown, or a reboot, the following items are logged in the wtmpx file: date The system time has been manually or automatically updated by date(1). The command name date is recorded in the field ut_name. In the field ut_line, the char- acter `|' indicates the time prior to the change, and the character `{' indicates the new time. reboot shutdown A system reboot or shutdown has been initiated. The character `~' is placed in the field ut_line, and reboot or shutdown in the field ut_name (see shutdown(8) and reboot(8)), using logwtmpx(3).
FILES
/var/run/utmpx The utmpx file. /var/log/wtmpx The wtmpx file. /var/log/lastlogx The lastlogx file.
SEE ALSO
last(1), login(1), rwho(1), w(1), who(1), endutxent(3), logwtmpx(3), utmp(5), ac(8), init(8), newsyslog(8), reboot(8) NetBSD 9.0 January 31, 2007 NetBSD 9.0

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