Book Image

Linux Essentials - Second Edition

By : Christine Bresnahan, Richard Blum
Book Image

Linux Essentials - Second Edition

By: Christine Bresnahan, Richard Blum

Overview of this book

Linux Essentials, Second Edition provides a solid foundation of knowledge for anyone considering a career in information technology, for anyone new to the Linux operating system, and for anyone who is preparing to sit for the Linux Essentials Exam. Through this engaging resource, you can access key information in a learning-by-doing style. Hands-on tutorials and end-of-chapter exercises and review questions lead you in both learning and applying new information—information that will help you achieve your goals! With the experience provided in this compelling reference, you can sit down for the Linux Essentials Exam with confidence. An open-source operating system, Linux is a UNIX-based platform that is freely updated by developers. The nature of its development means that Linux is a low-cost and secure alternative to other operating systems, and is used in many different IT environments. Passing the Linux Essentials Exam prepares you to apply your knowledge regarding this operating system within the workforce.
Table of Contents (19 chapters)

Editing Files

Computer documents come in many forms, but one of the most basic and flexible is a text file. Typically, configuration files and shell scripts are text files. Because you will often be modifying configuration files and creating shell scripts, you must be able to edit text files. This chapter covers this task with an emphasis on the simple text-mode pico, nano, and vi editors. A few roles played by text files are described first; then how to select a text editor is covered. To edit text files, of course, you must be able to start the editor, either on an existing document or a new one. The pico and nano editors are quite similar, so their operation is described together, followed by vi, which is a much more unusual editor by modern standards.

  • Understanding the role of text files
  • Choosing an editor
  • Launching an editor
  • Editing files with pico or nano
  • Editing files with vi