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

       updwtmp, logwtmp - append an entry to the wtmp file

       #include <utmp.h>

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

       For logwtmp(), link with -lutil.

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

       logwtmp()  constructs  a utmp structure using line, name, host, current
       time and current process ID.  Then it calls  updwtmp()  to  append  the
       structure to the wtmp file.

              database of past user logins

       Not  in  POSIX.1-2001.   Present  on Solaris, NetBSD, and perhaps other

       For consistency with the other "utmpx"  functions  (see  getutxent(3)),
       glibc provides (since version 2.1):

       #include <utmpx.h>

       void updwtmpx (const char *wtmpx_file, const struct utmpx *utx);

       This  function performs the same task as updwtmp(), but differs in that
       it takes a utmpx structure as its last argument.

       getutxent(3), wtmp(5)

       This page is part of release 3.74 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at

GNU                               2014-08-19                        UPDWTMP(3)

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