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NAME

       time - get time in seconds

SYNOPSIS

       #include <time.h>

       time_t time(time_t *t);

DESCRIPTION

       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.

RETURN VALUE

       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.

ERRORS

       EFAULT t points outside your accessible address space.

CONFORMING TO

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

NOTES

       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 conversion 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  seconds  and
       because  clocks  are  not  required  to  be  synchronized to a standard
       reference.  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.

SEE ALSO

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

COLOPHON

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