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UTMPX(5) FreeBSD 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 character `|' 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) FreeBSD 14.1-RELEASE-p8 January 31, 2007 FreeBSD 14.1-RELEASE-p8