man Pages(4): File Formats

wtmpx(4)

NAME

utmpx, wtmpx- utmpx and wtmpx entry formats

SYNOPSIS

#include <utmpx.h>

DESCRIPTION

The utmpx database file contains user access and accounting information for commands such as who(1) , write(1) , and login(1) . The wtmpx file contains the history of user access and accounting information for the utmpx database. The database contained in these files can be manipulated using the getutxent() family of functions. Entries in the database are described by the definitions and data structures in <utmpx.h> . See getutxent(3C) .

The utmpx and wtmpx files are extended database files that have replaced the obsolete utmp and wtmp files described on the utmp(4) manual page.

USAGE

Applications should not access these files directly, but should use the functions described on the getutxent(3C) manual page to interact with these files. Using these extended APIs will ensure that the utmp and utmpx databases are maintained consistently.

FILES

/var/adm/utmpx: user access and adminstration information (new format)
/var/adm/wtmpx: history of user access and adminstrative information (new format)