Group & User Creation

Question 1

Add Admin group to your server

Answer 1

groupadd Admin

Question 2

Create a user name Manuel and make Admin group his primary group

Answer 2

useradd Manuel -g Admin

Question 3

You created a user Christina earlier, but now realize that she needs to be added to the Security group, which is her secondary group. Make this addition to Christina’s user account.

Answer 3

usermod Christina -G Security

Question 4

Jackson is no longer a part of the company. You are instructed to remove his user account from the system. Please remove the user Jackson (but keep his home directory).

Answer 4

userdel Jackson

Question 5

Delete the user Nina and home directory associate with this user from the system.

Answer 5

userdel Nina -r

Question 6

rm -rf /home/Billie/

Answer 6

Remove user Billie’s home directory

Likely, after user was already deleted

Question 7

You created a user Sabrina, but soon realized that she spells her name with a y. Change the user name from Sabrina to Sabryna.

Answer 7

usermod Sabrina -l Sabryna

Question 8

Give user Alfie a password: ABcd1234

Answer 8

1) passwd Alfie

2) type and retype ABcd1234

Question 9

gpasswd -a Titus Admin

Answer 9

Add user Titus to Admin group

Question 10

gpasswd -d Gina Security

Answer 10

Remove user Gina from Security group

Question 11

The Admin group needs limited access. Set password: 5678AdmN to the group.

Answer 11

1) sudo gpasswd Admin

2) type and retype 5678AdmN

Question 12

gpasswd -r Security

Answer 12

Remove password from Security group

Question 13

passwd -e

Answer 13

prompt user to change password at next login

Question 14

passwd -d

Answer 14

delete a password for an account

Question 15

Please lock Sarah’s user account after 5 failed attempts to login

Answer 15

passwd Sarah -l

Question 16

Check the groups in which Michael belongs

Answer 16

groups Michael

or

cat /etc/group

or

id Michael

Question 17

How do I find the user id for Chip?

Answer 17

id Chip

or

cat /etc/passwd (field3)

Question 18

Set Debbie’s user account to have no access to the active shell

Answer 18

useradd Debbie -s /sbin/nologin