https://dana-study-log.tistory.com/entry/Linux-%EB%A6%AC%EB%88%85%EC%8A%A4-%ED%8C%8C%EC%9D%BC-%EC%8B%9C%EC%8A%A4%ED%85%9C-%EA%B5%AC%EC%A1%B0-%EB%A3%A8%ED%8A%B8-%EB%94%94%EB%A0%89%ED%86%A0%EB%A6%AC-%ED%99%88-%EB%94%94%EB%A0%89%ED%86%A0%EB%A6%AC
