![]() The secondary group IDs and group names for the current user The primary group ID and group name for the current user ![]() The user ID and username for the current user The output of the id command is described in Table 6-1. ![]() Group membership can be displayed by executing either the id or groups command: id Any additional groups a user is a member of are called the user’s secondary groups. This first group is called the user’s primary group. Primary versus Secondary GroupsĮvery user is a member of at least one group. These security features are covered in later chapters of this book. This group membership can also be used to prevent access to system resources because several security features in Linux make use of groups to impose security restrictions. Additionally, each user is a member of one or more group accounts.īeing a member of a group allows a user special access to system resources, such as files, directories, or processes (programs) that are running on the system. This user account offers several different features, including a user name and a password. Learn how to create group administrators What Are Groups Used For?Įach person who has access to a Linux system is provided a user account. ![]() Understand the security feature called User Private Groups (UPGs) Manage groups, including creating, modifying, and deleting group accounts AFTER READING THIS CHAPTER AND COMPLETING THE EXERCISES, YOU WILL BE ABLE TO DO THE FOLLOWING: ![]()
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