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TIME(2)                    Linux Programmer's Manual                   TIME(2)

       time - get time in seconds

       #include <time.h>

       time_t time(time_t *t);

       time()  returns  the time since the Epoch (00:00:00 UTC, January 1, 1970), measured
       in seconds.

       If t is non-NULL, the return value is also stored in the memory pointed to by t.

       On success, the value of time in seconds since the Epoch is  returned.   On  error,
       ((time_t) -1) is returned, and errno is set appropriately.

       EFAULT t points outside your accessible address space.

       SVr4, 4.3BSD, C89, C99, POSIX.1-2001.  POSIX does not specify any error conditions.

       POSIX.1 defines seconds since the Epoch as a value to be interpreted as the  number
       of  seconds between a specified time and the Epoch, according to a formula for con-
       version from UTC equivalent to conversion on the naive basis that leap seconds  are
       ignored and all years divisible by 4 are leap years.  This value is not the same as
       the actual number of seconds between the time and the Epoch, because of  leap  sec-
       onds  and  because  clocks are not required to be synchronized to a standard refer-
       ence.  The intention is that the interpretation of seconds since the  Epoch  values
       be consistent; see POSIX.1 Annex B 2.2.2 for further rationale.

       date(1), gettimeofday(2), ctime(3), ftime(3), time(7)

       This page is part of release 3.22 of the Linux man-pages project.  A description of
       the project, and information about reporting bugs, can be found at  http://www.ker-

Linux                             1997-09-09                           TIME(2)

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