Table of ContentsIntroduction1. Why this guide?2. Who should read this book?3. New versions, translations and availability4. Revision History5. Contributions6. Feedback7. Copyright information8. What do you need?9. Conventions used in this document10. Organization of this document1. Bash and Bash scripts1.1. Common shell programs1.2. Advantages of the Bourne Again SHell1.3. Executing commands1.4.