Introduction

This book you hold in your hands provides a solid introduction to the Linux operating system. As its title suggests, it will give you the essential knowledge to begin using and managing this powerful operating system (OS), which is an important one in today’s computing world.

The Linux Professional Institute, or LPI (lpi.org), offers a series of Linux certifications. These certifications aim to provide proof of skill levels for employers; if you’ve passed a particular certification, you should be competent to perform certain tasks on Linux computers. The LPI exams include Linux Essentials, LPIC-1, LPIC-2, and the LPIC-3 series. As the name implies, the Linux Essentials exam is the lowest level of the four exams, covering the ...

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