laravel5 file move

$file = Input::file("nameFile");
$clientName = $file -> getClientOriginalName();
$tmpName = $file ->getFileName();
$url = $file->getRealPath();

echo $url."<br>";
echo $clientName.'<br>';
echo $tmpName;

页面显示:
D:\wwwrot\facsimilemedia\public
171801_114747673522_2.jpg

文档上说移动文件
$file->move($destinationPath);
$file->move($destinationPath, $fileName);
这该传递哪两个参数过来呀