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.\" %sccs.include.redist.man% 9.\" 10.\" @(#)time.3 8.1 (Berkeley) 06/04/93 11.\" 12.Dd 13.Dt TIME 3 14.Os BSD 4 15.Sh NAME 16.Nm time 17.Nd get time of day 18.Sh SYNOPSIS 19.Fd #include <sys/types.h> 20.Ft time_t 21.Fn time "time_t *tloc" 22.Sh DESCRIPTION 23The 24.Fn time 25function 26returns the value of time in seconds since 0 hours, 0 minutes, 270 seconds, January 1, 1970, Coordinated Universal Time. 28.Pp 29A copy of the time value may be saved to the area indicated by the 30pointer 31.Fa tloc . 32If 33.Fa tloc 34is a NULL pointer, no value is stored. 35.Pp 36Upon successful completion, 37.Fn time 38returns the value of time. 39Otherwise a value of 40.Po 41.Po Fa time_t Pc \-1 42.Pc 43is returned and the global variable 44.Va errno 45is set to indicate the error. 46.Sh ERRORS 47The following error codes may be set in 48.Va errno : 49.Bl -tag -width [EFAULT] 50.It Bq Er EFAULT 51An argument address referenced invalid memory. 52.Sh SEE ALSO 53.Xr gettimeofday 2 , 54.Xr ctime 3 55.Sh HISTORY 56A 57.Fn time 58function appeared in 59.At v6 . 60