Seth Woolley's Man Viewer

UPDWTMP(3)                 Linux Programmer's Manual                UPDWTMP(3)



NAME
       updwtmp, logwtmp - append an entry to the wtmp file(1,n)

SYNOPSIS
       #include <utmp.h>

       void updwtmp(const char *wtmp_file, const struct utmp *ut);
       void logwtmp(const char *line, const char *name, const char *host(1,5));

DESCRIPTION
       updwtmp() appends the utmp structure ut to the wtmp file.

       logwtmp()  constructs an utmp structure using line, name, host(1,5), current
       time(1,2,n) and current process id.  Then it calls  updwtmp()  to  append  the
       structure to the utmp file.

AVAILABILITY
       Both  functions  are available under glibc2, but not under libc5.  How-
       ever, logwtmp used to occur in(1,8) the old libbsd. These days, the  logwtmp
       function  is  included  in(1,8) libutil. (Hence you'll need to add -lutil to
       your compiler commandline to get it.)

FILES
       /var/log/wtmp
              database of past user logins

SEE ALSO
       wtmp(5)



GNU                               2003-07-18                        UPDWTMP(3)