2. Give the definition of the operating system kernel.

3. Give the definition of a shell. Give the name of the most used shell in Linux distributions. . .

4. Let file1 be a file with permission attributes r w - r w - r - - and we execute the following command (chmod u+s)

5. What is the meaning of the SUID bit? .

6. What is the meaning of the stiky bit? .

7. Give the definition of the file system type and give examples (at least 3). . . .

8. What is the difference between the two file systems ext2 and ext3?

9. Give the file system types of CD-ROM . .

10. Is it possible to build a hard link between two files in different partitions . .

11. What are the required partitions for a Linux installation? .

12. The original file and the soft link have the same i-node. Give True or False. .

13. Give the command which allows you to know whether your computer is a 32bit or 64bit system.

14. Give the command which shows the paths in your Linux system. .

15. Give the command which lists files and repertories recursively. .

16. Give the command which creates a soft link between the file test1 from your home directory to the file test2 in the repertory rep1 which is already created in your home directory. .

17. Give the command which creates the repertories rep1/rep2 in your home directory. .

18. Give the command which creates the file test1 in your home directory. .

19. Give the command which move a file from the home repertory to the repertory rep1 .

20. The scripts that run when the user "med" logs in are:

A. /etc/profile B. med/profile C. med/.profile D. med/.bashrc E.

med/.bash_profile Give the correct responses