Conclusion
It is important to know how to add users, not just so they can log in to our system. Most server-based applications usually run via a dedicated unprivileged user accountfor example, the MySQL database application runs as user mysql and the Apache Web server application runs as user apache. These accounts aren't always created automatically, especially if the software is installed using TAR files.
Finally, the sudo utility provides a means of dispersing the responsibility of systems management to multiple users. You can even give some groups of users only partial access to privileged commands depending on their roles in the organization. This makes sudo a valuable part of any company's server administration and security policy.
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