Red Hat System Administration I

From workstation, open an SSH session to servera as student.

[student@workstation ~]$ ssh student@servera
...output omitted...
[student@servera ~]$ 

On servera, switch to root using sudo, converting to the root user's shell environment.

[student@servera ~]$ sudo su -
[sudo] password for student: student
[root@servera ~]# 

Create the operator1 user and confirm that it exists in the system.

[root@servera ~]# useradd operator1
[root@servera ~]# tail /etc/passwd
...output omitted...
operator1:x:1002:1002::/home/operator1:/bin/bash

Set the password for operator1 to redhat.

[root@servera ~]# passwd operator1
Changing password for user operator1.
New password: redhat
BAD PASSWORD: The password is shorter than 8 characters
Retype new password: redhat
passwd: all authentication tokens updated successfully.

Create the additional users called operator2 and operator3. Set their passwords to redhat.

1. Add the operator2 user. Set the password for operator2 to redhat.

   [root@servera ~]# useradd operator2
   [root@servera ~]# passwd operator2
   Changing password for user operator2.
   New password: redhat
   BAD PASSWORD: The password is shorter than 8 characters
   Retype new password: redhat
   passwd: all authentication tokens updated successfully.

2. Add the operator3 user. Set the password for operator3 to redhat.

   [root@servera ~]# useradd operator3
   [root@servera ~]# passwd operator3
   Changing password for user operator3.
   New password: redhat
   BAD PASSWORD: The password is shorter than 8 characters
   Retype new password: redhat
   passwd: all authentication tokens updated successfully.

Update the operator1 and operator2 user accounts to include the Operator One and Operator Two comments, respectively. Verify that the comments are successfully added.

1. Run usermod -c to update the comments of the operator1 user account.

   [root@servera ~]# usermod -c "Operator One" operator1

2. Run usermod -c to update the comments of the operator2 user account.

   [root@servera ~]# usermod -c "Operator Two" operator2

3. Confirm that the comments for each of the operator1 and operator2 users are reflected in the user records.

   [root@servera ~]# tail /etc/passwd
   ...output omitted...
   operator1:x:1002:1002:Operator One:/home/operator1:/bin/bash
   operator2:x:1003:1003:Operator Two:/home/operator2:/bin/bash
   operator3:x:1004:1004::/home/operator3:/bin/bash

Delete the operator3 user along with any personal data of the user. Confirm that the user is successfully deleted.

1. Remove the operator3 user from the system.

   [root@servera ~]# userdel -r operator3

2. Confirm that operator3 is successfully deleted.

   [root@servera ~]# tail /etc/passwd
   ...output omitted...
   operator1:x:1002:1002:Operator One:/home/operator1:/bin/bash
   operator2:x:1003:1003:Operator Two:/home/operator2:/bin/bash

   Notice that the preceding output does not display the user account information of operator3.

3. Exit the root user's shell to return to the student user's shell.

   [root@servera ~]# exit
   logout
   [student@servera ~]$ 

4. Log off from servera.

   [student@servera ~]$ exit
   logout
   Connection to servera closed.
   [student@workstation ~]$