设置文件权限的两种方式---POSIX

• Files.createFile()

  Path path = Paths.get("/home/icer/note.txt");
  
  PosixFileAttributes attr = null;
  		
  try {
  	attr = Files.readAttributes(path, PosixFileAttributes.class, LinkOption.NOFOLLOW_LINKS);
  } catch (Exception e) {
  	e.printStackTrace();
  }
  		
  FileAttribute> posixAttrs = PosixFilePermissions.asFileAttribute(attr.permissions());
  		
  try {
  	Files.createFile(path, posixAttrs);
  } catch (Exception e) {
  	e.printStackTrace();
  }

  
  
• Files.setPosixFilePermissions()

  Path path = Paths.get("/home/icer/note.txt");
  		
  try {
  	Set permissions = PosixFilePermissions.fromString("rw-r--r--");
  		
  	Files.setPosixFilePermissions(path, permissions);
  } catch (Exception e) {
  	e.printStackTrace();
  }