In this chapter, we began by learning about the different types of users and groups on CentOS 7. This was followed by understanding the difference between su and sudo for temporarily granting root privileges to the user. Then, we learned about the management of local user accounts and local user groups. Finally, we looked at how passwords are set and stored in Linux and how password aging policies are implemented in CentOS 7.

In the next chapter, we will learn about managing file permissions in CentOS 7.