1) Which platform are you on? BT, Windows??
2) If on Linux, which tool are you trying to use??
3) Next time....... we'll expect you to stick with forum rule:
PS: Thanks balding_parrot for such a nice signature..Any questions you have will get a good answer as long as you have followed the forum rules and show you have tried to help yourself. Your questions are clear and contain as much relevant info as possible, especially error messages, commands you have tried and the output from those commands.
remember: garbage in = garbage out