상위 디렉터리가 아직 존재하지 않아도 pastry/pies/cakes를 생성하는 명령은 무엇인가요?
pastry/pies/cakes
mkdir -r pastry/pies/cakes
rmdir -p pastry/pies/cakes
mkdir -p pastry/pies/cakes
touch pastry/pies/cakes