Linux Shell Scripting Essentials (eBook, PDF)
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Learn shell scripting to solve complex shell-related problems and to efficiently automate your day-to-day tasksAbout This BookFamiliarize yourself with the terminal by learning about powerful shell featuresAutomate tasks by writing shell scripts for repetitive workPacked with easy-to-follow, hands-on examples to help you write any type of shell script with confidenceWho This Book Is ForThis book is aimed at administrators and those who have a basic knowledge of shell scripting and who want to learn how to get the most out of writing shell scripts.What You Will LearnWrite effective shell script...
Learn shell scripting to solve complex shell-related problems and to efficiently automate your day-to-day tasksAbout This BookFamiliarize yourself with the terminal by learning about powerful shell featuresAutomate tasks by writing shell scripts for repetitive workPacked with easy-to-follow, hands-on examples to help you write any type of shell script with confidenceWho This Book Is ForThis book is aimed at administrators and those who have a basic knowledge of shell scripting and who want to learn how to get the most out of writing shell scripts.What You Will LearnWrite effective shell scripts easilyPerform search operations and manipulate large text data with a single shell commandModularize reusable shell scripts by creating shell librariesRedirect input, output, and errors of a command or script execution to other streamsDebug code with different shell debugging techniques to make your scripts bug-freeManage processes, along with the environment variables needed to execute them properlyExecute and embed other languages in your scriptsManage creation, deletion, and search operations in filesIn DetailShell scripting is a quick method to prototype complex applications or problems. Shell scripts are a collection of commands to automate tasks, usually those for which the user has a repeated need, when working on Linux-based systems. Using simple commands or a combination of them in a shell can solve complex problems easily.This book starts with the basics, including essential commands that can be executed on Linux systems to perform tasks within a few nanoseconds. You'll learn to use outputs from commands and transform them to show the data you require. Discover how to write shell scripts easily, execute script files, debug, and handle errors.Next, you'll explore environment variables in shell programming and learn how to customize them and add a new environment. Finally, the book walks you through processes and how these interact with your shell scripts, along with how to use scripts to automate tasks and how to embed other languages and execute them.Style and approachThis book is a pragmatic guide to writing efficient shell programs, complete with hands-on examples and tips.
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