Working with Users, Groups, and Permissions
Topics covered in this chapter:
To create users from a command-line environment, you can use the useradd command. Alternatively, it is possible to add users to the relevant configuration files manually. The latter may be useful in an environment where users are added from a custom-made shell script, but normally it is not recommended. The reason for this is obvious—an error in the main user configuration files might cause problems for all users on your server.
In this ...