在 windows perl 下运行如下程序：

sub stat
{
    my ($filename) = @_;
    my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksizes,$blocks) = stat($filename);
    print "filename is $filename:\n";
    print "Dev is $dev,Inode is $ino,Mode is $mode\n";
    print "nlink is $nlink,Uid is $uid,Gid is $gid\n";
    print "rdev is $rdev,Size is $size\n";
    print "atime is $atime,mtime is $mtime,ctime is $ctime\n";
    print "blkszies is $blksizes,blocks is $blocks\n";
}
sub get_stat
{
    foreach my $filename (@ARGV)
    {
        &stat($filename);
    }
}
&get_stat();
运行时输入：stat test.1 test.2 
结果得到的Dev 和inode 两个文件是相同的。而在UNIX环境下，这两者可以唯一确定一个文件！
google了一下发现， stat 函数在 windows 中某些值是得不到的(某些值为0)！
1.） UNIX值的描述：

0 	Device number of file system
1 	Inode number
2 	File mode (type and permissions)
3 	Number of (hard) links to the file
4 	Numeric user ID of file.s owner
5 	Numeric group ID of file.s owner
6 	The device identifier (special files only)
7 	File size,in bytes
8 	Last access time since the epoch
9 	Last modify time since the epoch
10 	Inode change time (not creation time!) since the epoch
11 	Preferred block size for file system I/O
12	Actual number of blocks allocated

window下值的描述