Question

1. On your Fedora Linux virtual machine, switch to a command-line terminal (tty2) by pressing Ctrl+Alt+F2 and log in to the terminal using the user name of root and the password of LNXrocks!.

2. At the command prompt, type cat /etc/shadow and press Enter. Record the encrypted password for bozo’s user account.

3. At the command prompt, type passwd –l bozo and press Enter to lock bozo’s user account.

4. At the command prompt, type cat /etc/shadow and press Enter. What has been changed regarding the original encrypted password recorded in Step 2?

5. Switch to a command-line terminal (tty5) by pressing Ctrl+Alt+F5 and attempt to log in to the terminal using the user name of bozo and the password of LNXrocks!. Were you successful?

6. Switch back to the command-line terminal (tty2) by pressing Ctrl+Alt+F2.

7. At the command prompt, type passwd –u bozo and press Enter to unlock bozo’s user

   account.

8. At the command prompt, type cat /etc/shadow and press Enter. Compare the

   encrypted password for bozo’s user account to the one recorded in Step 2.

9. Switch to a command-line terminal (tty5) by pressing Ctrl+Alt+F5 and attempt to log in to the terminal using the user name of bozo and the password of LNXrocks!. Were you successful?

10. Type exit and press Enter to log out of your shell.

11. Switch back to the command-line terminal (tty2) by pressing Ctrl+Alt+F2.

12. At the command prompt, type chsh –s /bin/false bozo and press Enter to change bozo’s shell to /bin/false. What message did you receive? Was the shell changed? Typecat /etc/passwd at a command prompt to verify that the shell was changed to /bin/ false for bozo’s user account.

13. Switch to a command-line terminal (tty5) by pressing Ctrl+Alt+F5 and attempt to log in to the terminal using the user name of bozo and the password of LNXrocks!. Were you successful?

14. Switch back to the command-line terminal (tty2) by pressing Ctrl+Alt+F2.

15. At the command prompt, type chsh –s /bin/bash bozo and press Enter to change

    bozo’s shell to /bin/bash.

16. Switch to a command-line terminal (tty5) by pressing Ctrl+Alt+F5 and attempt to log in to the terminal using the user name of bozo and the password of LNXrocks!. Were you successful?

17. Type exit and press Enter to log out of your shell.

18. Switch back to the command-line terminal (tty2) by pressing Ctrl+Alt+F2.

19. Type exit and press Enter to log out of your shell.

Answer 1

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