Jayant Varma  is the founder of OZ Apps (www.oz-apps.com), a consulting and development company providing IT solutions. He is an experienced developer with more than 30 years of industry experience spread across several countries. As  well as being a university lecturer in Australia where he currently resides, he is the author of a number of books  topics like SwiftUI Lua and Xcode as well as Open Source topics like Linux, Bash and Shell Scripting . He loves to travel  and finds Europe to be his favorite destination.Chris F.A. Johnson was introduced to Unix in 1990 and learned shell scripting because there was no C compiler on the system. His first major project was a menu-driven, user-extensible database system with report generator. Chris is now retired and currently resides in Toronto, Canada.

“This is an excellent reference book for those who need to write Bash scripts. It is well organized, logically presented, and covers all the major commands and structures that are necessary to write useful scripts. … Each chapter ends with a summary, a list of the commands introduced, and some exercises for the reader to try in order to practice the skills they have just learned.” (Michael Oudshoorn, Computing Reviews, February 15, 2024)

• 1. Hello, World: Your First Shell Program.- 2. Input, Output and Throughput.- 3. Looping and Branching.- 4. Command-Line parsing and Expansion.- 5. Parameters and Variables.- 6. Shell Functions.- 7. String Manipulation.-  8. File Operations and Commands.- 9. Reserved Words and Built-in Commands.- 10. Writing Bug-Free Scripts and Debugging the Rest.- 11. Programming for the Command Line.- 12. Runtime Configuration.- 13. Data Processing.-14. Scripting the Screen.- 15. Entry Level Programming.

Jayant Varma  is the founder of OZ Apps (www.oz-apps.com), a consulting and development company providing IT solutions. He is an experienced developer with more than 30 years of industry experience spread across several countries. As  well as being a university lecturer in Australia where he currently resides, he is the author of a number of books  topics like SwiftUI Lua and Xcode as well as Open Source topics like Linux, Bash and Shell Scripting . He loves to travel  and finds Europe to be his favorite destination.Chris F.A. Johnson was introduced to Unix in 1990 and learned shell scripting because there was no C compiler on the system. His first major project was a menu-driven, user-extensible database system with report generator. Chris is now retired and currently resides in Toronto, Canada.

“This is an excellent reference book for those who need to write Bash scripts. It is well organized, logically presented, and covers all the major commands and structures that are necessary to write useful scripts. … Each chapter ends with a summary, a list of the commands introduced, and some exercises for the reader to try in order to practice the skills they have just learned.” (Michael Oudshoorn, Computing Reviews, February 15, 2024)

• 1. Hello, World: Your First Shell Program.- 2. Input, Output and Throughput.- 3. Looping and Branching.- 4. Command-Line parsing and Expansion.- 5. Parameters and Variables.- 6. Shell Functions.- 7. String Manipulation.-  8. File Operations and Commands.- 9. Reserved Words and Built-in Commands.- 10. Writing Bug-Free Scripts and Debugging the Rest.- 11. Programming for the Command Line.- 12. Runtime Configuration.- 13. Data Processing.-14. Scripting the Screen.- 15. Entry Level Programming.

Jayant Varma  is the founder of OZ Apps (www.oz-apps.com), a consulting and development company providing IT solutions. He is an experienced developer with more than 30 years of industry experience spread across several countries. As  well as being a university lecturer in Australia where he currently resides, he is the author of a number of books  topics like SwiftUI Lua and Xcode as well as Open Source topics like Linux, Bash and Shell Scripting . He loves to travel  and finds Europe to be his favorite destination.Chris F.A. Johnson was introduced to Unix in 1990 and learned shell scripting because there was no C compiler on the system. His first major project was a menu-driven, user-extensible database system with report generator. Chris is now retired and currently resides in Toronto, Canada.

“This is an excellent reference book for those who need to write Bash scripts. It is well organized, logically presented, and covers all the major commands and structures that are necessary to write useful scripts. … Each chapter ends with a summary, a list of the commands introduced, and some exercises for the reader to try in order to practice the skills they have just learned.” (Michael Oudshoorn, Computing Reviews, February 15, 2024)

• 1. Hello, World: Your First Shell Program.- 2. Input, Output and Throughput.- 3. Looping and Branching.- 4. Command-Line parsing and Expansion.- 5. Parameters and Variables.- 6. Shell Functions.- 7. String Manipulation.-  8. File Operations and Commands.- 9. Reserved Words and Built-in Commands.- 10. Writing Bug-Free Scripts and Debugging the Rest.- 11. Programming for the Command Line.- 12. Runtime Configuration.- 13. Data Processing.-14. Scripting the Screen.- 15. Entry Level Programming.