Look at the subject of this thread: the "Linux" part is a strong hint that these commands won't work in Windows 7!
It is good that you searched about your problem, whatever it is, but instead of reviving an old thread, you should have made your own, or send a private message if you wanted direct assistance.
It is good that you searched about your problem, whatever it is, but instead of reviving an old thread, you should have made your own, or send a private message if you wanted direct assistance.