Suppose that you want to block everyone (except you) at the main door (your ~ directory) of your directory hierarchy (i.e., your home directory, not the files inside the directory). Show the command(s) that you used to accomplish the task and confirm that the task has actually been done.

5. What do . (dot), .. (dotdot), and ~ represent in UNIX? Show use of all three.

6. What is an inode number in Linux? Show the command for displaying the inode numbers for the root directory (/) and your home directory (~) only (i.e., not the directory called /home or the individual files inside your home directory).