1.\" Copyright (c) 1989, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the American National Standards Committee X3, on Information 6.\" Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. All advertising materials mentioning features or use of this software 17.\" must display the following acknowledgement: 18.\" This product includes software developed by the University of 19.\" California, Berkeley and its contributors. 20.\" 4. Neither the name of the University nor the names of its contributors 21.\" may be used to endorse or promote products derived from this software 22.\" without specific prior written permission. 23.\" 24.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" @(#)time.3 8.1 (Berkeley) 6/4/93 37.\" $FreeBSD$ 38.\" 39.Dd June 4, 1993 40.Dt TIME 3 41.Os 42.Sh NAME 43.Nm time 44.Nd get time of day 45.Sh LIBRARY 46.Lb libc 47.Sh SYNOPSIS 48.Fd #include <time.h> 49.Ft time_t 50.Fn time "time_t *tloc" 51.Sh DESCRIPTION 52The 53.Fn time 54function 55returns the value of time in seconds since 0 hours, 0 minutes, 560 seconds, January 1, 1970, Coordinated Universal Time. 57.Pp 58A copy of the time value may be saved to the area indicated by the 59pointer 60.Fa tloc . 61If 62.Fa tloc 63is a NULL pointer, no value is stored. 64.Pp 65Upon successful completion, 66.Fn time 67returns the value of time. 68Otherwise a value of 69.Pq Po Vt time_t Pc \-1 70is returned and the global variable 71.Va errno 72is set to indicate the error. 73.Sh ERRORS 74The following error codes may be set in 75.Va errno : 76.Bl -tag -width Er 77.It Bq Er EFAULT 78An argument address referenced invalid memory. 79.El 80.Sh SEE ALSO 81.Xr gettimeofday 2 , 82.Xr ctime 3 83.Sh HISTORY 84A 85.Fn time 86function appeared in 87.At v6 . 88