UTIME(2) Linux Programmer's Manual UTIME(2)
NAME
utime, utimes - change access and/or modification times of an inode
SYNOPSIS
#include<sys/types.h>
#include<utime.h>
intutime(constchar*filename,structutimbuf*buf);
#include<sys/time.h>
intutimes(char*filename,structtimeval*tvp);
DESCRIPTION
utime changes the access and modification times of the inode specified
by filename to the actime and modtime fields of buf respectively. If
buf is NULL, then the access and modification times of the file are set
to the current time. The utimbuf structure is:
struct utimbuf {
time_t actime; /* access time */
time_t modtime; /* modification time */
};
In the Linux DLL 4.4.1 libraries, utimes is just a wrapper for utime:
tvp[0].tv_sec is actime, and tvp[1].tv_sec is modtime. The timeval
structure is:
struct timeval {
long tv_sec; /* seconds */
long tv_usec; /* microseconds */
};
RETURNVALUE
On success, zero is returned. On error, -1 is returned, and errno is
set appropriately.
ERRORS
Other errors may occur.
EACCES Permission to write the file is denied.
ENOENT filename does not exist.
CONFORMINGTO
utime: SVr4, SVID, POSIX. SVr4 documents additional error conditions
EFAULT, EINTR, ELOOP, EMULTIHOP, ENAMETOOLONG, ENOLINK, ENOTDIR, ENO-
LINK, ENOTDIR, EPERM, EROFS.
utimes: BSD 4.3
SEEALSO
stat(2)
Linux 1995-06-10 UTIME(2)
Take our 
