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wtmp(4) [opensolaris man page]

utmp(4) 							   File Formats 							   utmp(4)

utmp, wtmp - utmp and wtmp database entry formats SYNOPSIS
#include <utmp.h> /var/adm/utmp /var/adm/wtmp DESCRIPTION
The utmp and wtmp database files are obsolete and are no longer present on the system. They have been superseded by the extended database contained in the utmpx and wtmpx database files. See utmpx(4). It is possible for /var/adm/utmp to reappear on the system. This would most likely occur if a third party application that still uses utmp recreates the file if it finds it missing. This file should not be allowed to remain on the system. The user should investigate to deter- mine which application is recreating this file. SEE ALSO
utmpx(4) SunOS 5.11 22 Feb 1999 utmp(4)

Check Out this Related Man Page

utmpx(4)							   File Formats 							  utmpx(4)

utmpx, wtmpx - utmpx and wtmpx database entry formats SYNOPSIS
#include <utmpx.h> /var/adm/utmpx /var/adm/wtmpx DESCRIPTION
The utmpx and wtmpx files are extended database files that have superseded the obsolete utmp and wtmp database files. The utmpx database contains user access and accounting information for commands such as who(1), write(1), and login(1). The wtmpx database contains the history of user access and accounting information for the utmpx database. USAGE
Applications should not access these databases directly, but should use the functions described on the getutxent(3C) manual page to inter- act with the utmpx and wtmpx databases to ensure that they are maintained consistently. FILES
/var/adm/utmpx user access and adminstration information /var/adm/wtmpx history of user access and adminstrative information SEE ALSO
getutxent(3C), wait(3C)wait.h(3HEAD) SunOS 5.10 22 Feb 1999 utmpx(4)
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