Christine Bresnahan - CompTIA Linux+ Study Guide (Exam XK0-004)

Christine Bresnahan

Richard Blum

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First, all glory and praise go to God, who through His Son, Jesus Christ, makes all things possible and gives us the gift of eternal life.

Many thanks go to the fantastic team of people at Sybex for their outstanding work on this project. Thanks to Kenyon Brown, the senior acquisitions editor, for offering us the opportunity to work on this book. Also thanks to Stephanie Barton, the development editor, for keeping things on track and making the book more presentable. Thanks, Steph, for all your hard work and diligence. The technical proofreaders, Kevin E. Ryan and Jason Eckert, did a wonderful job of double-checking all of the work in the book in addition to making suggestions to improve the content. Also our appreciation goes out to David B. Clinton for taking the reins as technical editor near the close of the project and offering his terrific advice. Thanks also goes to the young and talented Daniel Anez (theanez.com) for his illustration work. We would also like to thank Carole Jelen at Waterside Productions, Inc., for arranging this opportunity for us and for helping us out in our writing careers.

Christine would particularly like to thank her husband, Timothy, for his encouragement, patience, and willingness to listen, even when he has no idea what she is talking about. Christine would also like to express her love for Samantha and Cameron, May God bless your marriage richly.

Rich would particularly like to thank his wife, Barbara, for enduring his grouchy attitude during this project and helping to keep up his spirits with baked goods.

Christine Bresnahan, CompTIA Linux+, LPIC-1, started working with computers more than 30 years ago in the IT industry as a system administrator. Christine is an adjunct professor at Ivy Tech Community College where she teaches Linux certification and Python programming classes. She also writes books and produces instructional resources for the classroom.

Richard Blum, CompTIA Linux+ ce, CompTIA Security+ ce, LPIC-1, has also worked in the IT industry for more than 30 years as both a system and network administrator, and he has published numerous Linux and open-source books. Rich is an online instructor for Linux and web programming courses that are used by colleges and universities across the United States. When he is not being a computer nerd, Rich enjoys spending time with his wife, Barbara, and his two daughters, Katie and Jessica.

Linux has become one of the fastest growing operating systems used in server environments. Most companies utilize some type of Linux system within their infrastructure, and Linux is one of the major players in the cloud computing world. The ability to build and manage Linux systems is a skill that many companies are now looking for. The more you know about Linux, the more marketable youll become in todays computer industry.

The purpose of this book is to provide you with the knowledge and skills you need to succeed in the Linux world.

The CompTIA Linux+ exam has become a benchmark in the computer industry as a method of demonstrating skills with the Linux operating system. Obtaining CompTIA Linux+ certification means that youre comfortable working in a Linux environment and have the skills necessary to install and maintain Linux systems.