Are you a new GNU/Linux user who wants to learn more than just dragging windows around and clicking your mouse? This book is designed for users who are completely new to the GNU/Linux command line and want to learn the fundamentals. In this book, basic Linux commands for navigation, file and directory administration, software installation, and elementary system troubleshooting are covered. You will discover how to use Linux commands in this book. Over the years, Linux has seen significant transformation and is currently regarded as one of the top operating systems in the world. As a system administrator, you maintain the functionality of the global computing infrastructure. Problems must be fixed, systems must be maintained, and security must be maintained at all times. I hope these commands will be useful and enable you to perform your work more effectively.