Copyright (c) 1980 Regents of the University of California.
All rights reserved. The Berkeley software License Agreement
specifies the terms and conditions for redistribution.
@(#)gettimeofday.2 6.7 (Berkeley) 5/14/86
All rights reserved. The Berkeley software License Agreement
specifies the terms and conditions for redistribution.
@(#)gettimeofday.2 6.7 (Berkeley) 5/14/86
TIME 2 "May 14, 1986"
C 4 NAME
time, stime - get/set date and time
SYNOPSIS
#include <sys/types.h> #include <time.h> time_t time(time_t *tp) int stime(time_t *tp)
DESCRIPTION
The system's notion of the current Greenwich time
is obtained with the
time call, and set with the
stime call.
The time is expressed
in seconds since midnight (0 hour), January 1, 1970.
The time is both returned by
time and stored in the variable pointed to by
tp unless
tp is the null pointer.
Stime obtains the time to set from the variable pointed to by tp .
Only the super-user may set the time of day.
RETURN
A 0 return value from
stime indicates that the call succeeded.
Time returns the current time on success.
A -1 return value indicates an error occurred, and in this
case an error code is stored into the global variable errno.
"ERRORS
The following error codes may be set in errno:
15 [EFAULT] The tp address referenced invalid memory.
15 [EPERM] A user other than the super-user attempted to set the time.
"SEE ALSO"
date (1), ctime (3).