Problem
1. If ls -li shows two filenames with the same inode number, what does that indicate?
2. What happens when you invoke the command ln foo bar if
(i) bar doesn't exist,
(ii) bar exists as an ordinary file,
(iii) bar exists as a directory?
3. How can you make out whether two files are copies or links?
4. Explain two application areas of hard links. What are the two main disadvantages of the hard link?