as it is your first post on the forums; get used to being told to google simple things for yourself before asking, here. if you are going to ask these sorts of questions; you will be the boy that cried wolf too many times, when you actually need real assistance. basic os related information should be looked for elsewhere and is easily accessible information if you even have a hope in hell of learning any B|T related subject matters.
this is a post by a user who is also new to linux asking the same question,in a thread; in a far more appropriate place. one you would have found in 1 simple search string.