Red Hat Technical Support Engineer Interview Questions, Process, and Tips

No, two different users cannot have the same UID.

• UID (User ID) is a unique identifier assigned to each user in a system.

• Having two different users with the same UID can cause conflicts and security issues.

• UIDs are typically assigned sequentially and are unique within a system.

• For example, in Linux systems, UID 0 is reserved for the root user and cannot be assigned to any other user.

To create a new user without useradd or add user command, use the usermod command.

• Use the usermod command with the -u option to create a new user

• Specify the username and user ID as arguments

• Example: usermod -u 1001 newuser

• Create a home directory for the new user manually

Yes, group name can be changed. The procedure involves accessing the group settings and editing the name.

• Access the group settings

• Click on the group name

• Edit the name

• Save changes

The root user name can be changed by modifying the /etc/passwd file.

• Open the /etc/passwd file in a text editor

• Locate the line that starts with 'root'

• Change the username in the first field to the desired name

• Save and close the file

• Restart the system or use the 'su' command to switch to the new username

To set a user expiry date, you can use a combination of user management tools and scripting languages.

• Use user management tools like Active Directory or LDAP to set an expiry date for a user account.

• In Active Directory, you can set the 'Account Expires' attribute for a user to specify the expiry date.

• In LDAP, you can set the 'shadowExpire' attribute to specify the expiry date.

• You can also use scripting languages like P...read more