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Full Discussion: Resetting WTMP?
Top Forums UNIX for Dummies Questions & Answers Resetting WTMP? Post 1293 by cuppjr on Thursday 22nd of February 2001 09:36:23 AM
Old 02-22-2001
Reboot?

Is the only way to get correct data (i.e. dates beyond 11-28-2000) is via a reboot? What would cause this issue to begin with?
 

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UTMPX(5)						      BSD 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) BSD
January 31, 2007 BSD
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