Question

use linux follow instructions , put the commands at each step and screenshot at each step

1.Add a user user1 in the system

a)Verify that user1 is created by viewing the passwd file

b)What is the primary group of user1?

2.Create a group called cybersecurity

a)Verify that the group is created by viewing the group file

b)Change the primary group of user1 to cybersecurity

c)Verify that the primary group of user1 is changed to cybersecurity

3.Log into user1 account

4.Create a new user user2

a)What do you get? Why?

5.Add user1 to group sudo

a)What do you need to do to add user1 to sudo? (Do it!)

6.Go back to user1 terminal and create a new user user2

7.Display the groups that user1 belongs

8.Display the groups that user belongs

9. Logged in as the superuser in your Linux machine, try to view or modify these files:

                                        /etc/passwd

/etc/shadow

9. Which ones can you view without sudo?

10. Which ones can you modify without sudo?

11. Which ones can you view with sudo?

12. Which ones can you modify with sudo?

13. Why do you think the settings are so? Explain.

Answer 1

Please go through screen shots.

1.

2.

3.

4.

5. user1 is not had sudo permission so it can not create a new user.

6.

7.

9: /etc/passwd can view without sudo. /etc/shadow can not see without sudo.
10: /etc/shadow or /etc/passwd can not modify without sudo
11: /etc/passwd and /etc/shadow can view with sudo.
12: /etc/passwd and /etc/shadow can modify with sudo.
13: user and group settings are so important to access any file in linux.