Bash Scripting

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Bash Quick Start Guide

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Author : Tom Ryder
language : en
Publisher: Packt Publishing Ltd
Release Date : 2018-09-28

Bash Quick Start Guide written by Tom Ryder and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-28 with Computers categories.

Learn how to write shell script effectively with Bash, to quickly and easily write powerful scripts to manage processes, automate tasks, and to redirect and filter program input and output in useful and novel ways. Key FeaturesDemystify the Bash command lineWrite shell scripts safely and effectivelySpeed up and automate your daily workBook Description Bash and shell script programming is central to using Linux, but it has many peculiar properties that are hard to understand and unfamiliar to many programmers, with a lot of misleading and even risky information online. Bash Quick Start Guide tackles these problems head on, and shows you the best practices of shell script programming. This book teaches effective shell script programming with Bash, and is ideal for people who may have used its command line but never really learned it in depth. This book will show you how even simple programming constructs in the shell can speed up and automate any kind of daily command-line work. For people who need to use the command line regularly in their daily work, this book provides practical advice for using the command-line shell beyond merely typing or copy-pasting commands into the shell. Readers will learn techniques suitable for automating processes and controlling processes, on both servers and workstations, whether for single command lines or long and complex scripts. The book even includes information on configuring your own shell environment to suit your workflow, and provides a running start for interpreting Bash scripts written by others. What you will learnUnderstand where the Bash shell fits in the system administration and programming worldsUse the interactive Bash command line effectivelyGet to grips with the structure of a Bash command lineMaster pattern-matching and transforming text with BashFilter and redirect program input and outputWrite shell scripts safely and effectivelyWho this book is for People who use the command line on Unix and Linux servers already, but don't write primarily in Bash. This book is ideal for people who've been using a scripting language such as Python, JavaScript or PHP, and would like to understand and use Bash more effectively.

Learn Linux Shell Scripting Fundamentals Of Bash 4 4

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Author : Sebastiaan Tammer
language : en
Publisher: Packt Publishing Ltd
Release Date : 2018-12-31

Learn Linux Shell Scripting Fundamentals Of Bash 4 4 written by Sebastiaan Tammer and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-31 with Computers categories.

Create and maintain powerful Bash scripts for automation and administration. Key FeaturesGet up and running with Linux shell scripting using real-world examplesLeverage command-line techniques and methodologies to automate common yet complex administration tasksA practical guide with exposure to scripting constructs and common scripting patternsBook Description Shell scripts allow us to program commands in chains and have the system execute them as a scripted event, just like batch files. This book will start with an overview of Linux and Bash shell scripting, and then quickly deep dive into helping you set up your local environment, before introducing you to tools that are used to write shell scripts. The next set of chapters will focus on helping you understand Linux under the hood and what Bash provides the user. Soon, you will have embarked on your journey along the command line. You will now begin writing actual scripts instead of commands, and will be introduced to practical applications for scripts. The final set of chapters will deep dive into the more advanced topics in shell scripting. These advanced topics will take you from simple scripts to reusable, valuable programs that exist in the real world. The final chapter will leave you with some handy tips and tricks and, as regards the most frequently used commands, a cheat sheet containing the most interesting flags and options will also be provided. After completing this book, you should feel confident about starting your own shell scripting projects, no matter how simple or complex the task previously seemed. We aim to teach you how to script and what to consider, to complement the clear-cut patterns that you can use in your daily scripting challenges. What you will learnUnderstand Linux and Bash basics as well as shell scripting fundamentalsLearn to write simple shell scripts that interact with Linux operating systemBuild, maintain, and deploy scripts in a Linux environmentLearn best practices for writing shell scriptsAvoid common pitfalls associated with Bash scriptingGain experience and the right toolset to write your own complex shell scriptsWho this book is for This book targets new and existing Linux system administrators, Windows system administrators or developers who are interested in automating administrative tasks. No prior shell scripting experience is needed but in case you do this book will make a pro quickly. Readers should have a basic understanding of the command line.

Bash Scripting

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Author : John Bach
language : en
Publisher:
Release Date : 2020-09-11

Bash Scripting written by John Bach and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-11 with categories.

Bash ScriptingThink of a script for a play, or a movie, or a TV show. The script tells the actors what they should say and do. A script for a computer tells the computer what it should do or say. In the context of Bash scripts we are telling the Bash shell what it should do.A Bash script is a plain text file which contains a series of commands. These commands are a mixture of commands we would normally type ouselves on the command line (such as ls or cp for example) and commands we could type on the command line but generally wouldn't (you'll discover these over the next few pages). An important point to remember though is: Anything you can run normally on the command line can be put into a script and it will do exactly the same thing. Similarly, anything you can put into a script can also be run normally on the command line and it will do exactly the same thing.You don't need to change anything. Just type the commands as you would normally and they will behave as they would normally. It's just that instead of typing them at the command line we are now entering them into a plain text file. In this sense, if you know how to do stuff at the command line then you already know a fair bit in terms of Bash scripting.It is convention to give files that are Bash scripts an extension of .sh (myscript.sh for example). As you would be aware (and if you're not maybe you should consider reviewing our Linux Tutorial), Linux is an extensionless system so a script doesn't necessarily have to have this characteristic in order to work.

Linux Command Line And Shell Scripting Bible

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Author : Richard Blum
language : en
Publisher: John Wiley & Sons
Release Date : 2020-12-16

Linux Command Line And Shell Scripting Bible written by Richard Blum and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-16 with Computers categories.

Advance your understanding of the Linux command line with this invaluable resource Linux Command Line and Shell Scripting Bible, 4th Edition is the newest installment in the indispensable series known to Linux developers all over the world. Packed with concrete strategies and practical tips, the latest edition includes brand-new content covering: Understanding the Shell Writing Simple Script Utilities Producing Database, Web & Email Scripts Creating Fun Little Shell Scripts Written by accomplished Linux professionals Christine Bresnahan and Richard Blum, Linux Command Line and Shell Scripting Bible, 4th Edition teaches readers the fundamentals and advanced topics necessary for a comprehensive understanding of shell scripting in Linux. The book is filled with real-world examples and usable scripts, helping readers navigate the challenging Linux environment with ease and convenience. The book is perfect for anyone who uses Linux at home or in the office and will quickly find a place on every Linux enthusiast’s bookshelf.

Mastering Linux Shell Scripting

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Author : Andrew Mallett
language : en
Publisher: Packt Publishing Ltd
Release Date : 2015-12-24

Mastering Linux Shell Scripting written by Andrew Mallett and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-24 with Computers categories.

Master the complexities of Bash shell scripting and unlock the power of shell for your enterprise About This Book Identify the high level steps such as verifying user input, using command lines and conditional statements in creating and executing simple shell scripts Create and edit dynamic shell scripts to manage complex and repetitive tasks Learn about scripting in Perl and programming in Python as a BASH scripting alternative with this practical, step-by-step guide Who This Book Is For Mastering Linux Shell Scripting has been written for Linux administrators who want to automate tasks in their daily lives, saving time and effort. You'll need to have command-line experience and be familiar with the tasks that you need to automate. What You Will Learn Use the type command to identify the order of command evaluation Create interactive scripts that prompt for user input Foster menu structures for operators with little command-line experience Develop scripts that dynamically edit web configuration files to produce a new virtual host Write scripts that use AWK to search and reports on log files Draft effective scripts using functions as building blocks, reducing maintenance and build time Make informed choices by comparing different script languages such as Perl and Python with BASH In Detail Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. Using both simple one-line commands and command sequences complex problems can be solved with ease, from text processing to backing up sysadmin tools. In this book, you'll discover everything you need to know to master shell scripting and make informed choices about the elements you employ. Get to grips with the fundamentals of creating and running a script in normal mode, and in debug mode. Learn about various conditional statements' code snippets, and realize the power of repetition and loops in your shell script. Implement functions and edit files using the Stream Editor, script in Perl, program in Python – as well as complete coverage of other scripting languages to ensure you can choose the best tool for your project. Style and approach The book will capture your attention and keep you engaged with the simplicity and clarity of each explanation. Every step is accompanied with screen captures so you can cross-check the results before moving on.

Bash Scripting And Shell Programming Linux Command Line

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Author : Jason Cannon
language : en
Publisher:
Release Date : 2018

Bash Scripting And Shell Programming Linux Command Line written by Jason Cannon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.

"Learn bash programming for Linux, Unix, & Mac. Learn how to write bash scripts like a pro & solve real-world problems! If you want to learn how to write bash shell scripts like a pro, solve real-world problems, or automate repetitive and complex tasks, read on. By the end of this course you will be able to create bash scripts with ease. You'll learn how to take tedious and repetitious tasks and turn them into programs that will save you time and simplify your life on Linux, Unix, or MAC systems. What you learn in this course can be applied to any shell, however, the focus is on the bash shell and you'll learn some really advanced bash features. Again, whether you're using bash, bourne (sh), KornShell (ksh), C shell (csh), Z shell (zsh), or even the tcsh shell, you'll be able to put what you learn in this course to good use. Also, you'll be able to use these scripts on any Linux environment including Ubuntu, Debian, Linux Mint, RedHat, Fedora, OpenSUSE, Slackware, Kali Linux and more. You're scripts will even run on other operating systems such as Apple's Mac OS X, Oracle's Solaris, IBM's AIX, HP's HP-UX, FreeBSD, NetBSD, and OpenBSD. (Sorry, this course is NOT for Windows scripting or powershell scripting.)"--Resource description page.

Shell Scripting

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Author : Jaosn Cannon
language : en
Publisher: CreateSpace
Release Date : 2015-09-17

Shell Scripting written by Jaosn Cannon and has been published by CreateSpace this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-17 with categories.

Shell Scripting Made Easy If you want to learn how to write shell scripts like a pro, solve real-world problems, or automate repetitive and complex tasks, read on. Hello. My name is Jason Cannon and I'm the author of Linux for Beginners, Python Programming for Beginners, and an instructor to thousands of satisfied students. I started my IT career in the late 1990's as a Unix and Linux System Engineer and I'll be sharing my real-world shell scripting and bash programming experience with you throughout this book. By the end of this book you will be able to create shell scripts with ease. You'll learn how to take tedious and repetitive tasks and turn them into programs that will save you time and simplify your life on Linux, Unix, or MAC systems. Here is what you will get and learn by reading this Shell Scripting book: A step-by-step process of writing shell scripts that solve real-world problems. The #1 thing you must do every time you create a shell script. How to quickly find and fix the most shell scripting errors. How to accept input from a user and then make decisions on that input. How to accept and process command line arguments. What special variables are available, how to use them in your shell scripts, and when to do so. A shell script creation check list -- You'll never have to guess what to include in each of your shell scripts again. Just use this simple check list. A shell script template (boilerplate). Use this format for each of your shell scripts. It shows exactly what to include and where everything goes. Eliminate guesswork! Practice exercises with solutions so you can start using what you learn right away. Real-world examples of shell scripts from my personal collection. A download that contains the scripts used in the book and lessons. You'll be able to look at and experiment with everything you're learning. Learn to Program Using Any Shell Scirpting Language What you learn in this book can be applied to any shell, however the focus is on the bash shell and you'll learn some really advanced bash features. Again, whether you're using bash, bourne (sh), KornShell (ksh), C shell (csh), Z shell (zsh), or even the tcsh shell, you'll be able to put what you learn in this book to good use. Perfect for Linux, Unix, Mac and More! Also, you'll be able to use these scripts on any Linux environment including Ubuntu, Debian, Linux Mint, RedHat, Fedora, OpenSUSE, Slackware, Kali Linux and more. You're scripts will even run on other operating systems such as Apple's Mac OS X, Oracle's Solaris, IBM's AIX, HP's HP-UX, FreeBSD, NetBSD, and OpenBSD. Scroll up, click the Buy Now With 1 Click button and get started learning Linux today!

Mastering Linux Shell Scripting

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Author : Mokhtar Ebrahim
language : en
Publisher: Packt Publishing Ltd
Release Date : 2018-04-19

Mastering Linux Shell Scripting written by Mokhtar Ebrahim and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-19 with Computers categories.

Master the complexities of Bash shell scripting and unlock the power of shell for your enterprise Key Features Identify high-level steps such as verifying user input Using the command line and conditional statements in creating/executing simple shell scripts Create and edit dynamic shell scripts to manage complex and repetitive tasks Leverage the command-line to bypass GUI and automate common tasks Book Description In this book, you’ll discover everything you need to know to master shell scripting and make informed choices about the elements you employ. Grab your favorite editor and start writing your best Bash scripts step by step. Get to grips with the fundamentals of creating and running a script in normal mode, and in debug mode. Learn about various conditional statements' code snippets, and realize the power of repetition and loops in your shell script. You will also learn to write complex shell scripts. This book will also deep dive into file system administration, directories, and system administration like networking, process management, user authentications, and package installation and regular expressions. Towards the end of the book, you will learn how to use Python as a BASH Scripting alternative. By the end of this book, you will know shell scripts at the snap of your fingers and will be able to automate and communicate with your system with keyboard expressions. What you will learn Make, execute, and debug your first Bash script Create interactive scripts that prompt for user input Foster menu structures for operators with little command-line experience Develop scripts that dynamically edit web configuration files to produce a new virtual host Write scripts that use AWK to search and reports on log files Draft effective scripts using functions as building blocks, reducing maintenance and build time Make informed choices by comparing different script languages such as Python with BASH Who this book is for If you are a Linux administrator or a system administrator and are interested in automating tasks in your daily lives, saving time and effort, this book is for you. Basic shell scripting and command-line experience will be required. Familiarity with the tasks you need to automate will be helpful.

Advanced Bash Scripting Guide 5 3 Volume 1

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Author : Mendel Cooper
language : en
Publisher: Lulu.com
Release Date : 2010

Advanced Bash Scripting Guide 5 3 Volume 1 written by Mendel Cooper and has been published by Lulu.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

Bash Scripting

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Author : Moaml Mohmmed
language : en
Publisher:
Release Date : 2019-11-18

Bash Scripting written by Moaml Mohmmed and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-18 with categories.

Bash ScriptingEverything you need to know about Bash//What's a shell, and why should you care about it?Any recent computer operating system (byrecent, we mean since about 1970) hassome sort of user interface-some way of specifying commands for the operating sys-tem to execute. But in lots of operating systems, that command interface was reallybuilt in and there was only one way to talk to the computer. Furthermore, an operat-ing system's command interface would let you execute commands, but that wasabout all. After all, what else was there to do?The Unix operating system popularized the notion of separating the shell(the part ofthe system that lets you type commands) from everything else: the input/output sys-tem, the scheduler, memory management, and all of the other things the operating system takes care of for you (and that most users don't want to care about). The shell was just one more program; it was a program whose job was executing other pro-grams on behalf of users.But that was the beginning of a revolution. The shell was just another program thatran on Unix, if you didn't like the standard one, you could create your own. So bythe end of Unix's first decade, there were at least two competing shells: the Bourne Shell, sh(which was a descendant of the original Thomson shell), plus the C Shell, csh. By the end of Unix's second decade, there were a few more alternatives: theKorn shell, (ksh), and the first versions of the bash shell (bash).//IntroductionWhat is shell propmt?When does paralysis begin and end?CommandsSimple commandsComplex commandsCompound commandsWhat is shell script?The advantages are found only in bashWhat is interactive chance?Chapter OneCreate and run the Bash programWriting and namingIn which coincidence will the program work?Add commentsChapter IIBash environmentShell initialization filesVariables in BashTypes of variablesClassify variables based on their contentCreate variablesExport variablesThe difference between * $ and @ $Recycle shell programs using variablesQuote characters in BashUtility quote typefacesCharacter escapeSingle quotation marksDouble quotation marksLocalesExpansions in BashExpanded swastika {}Length Expansion ( )Substitution of commandsComputational expansionProcess substitutionExpands file namesAlternative commands in BashUtility alternative commandsCreate and delete alternate commandsFaster functionsChapter IIIStereotypes in BashRegular ExpressionsThe difference between basic and extended stereotypesGrep commandGrep command and typical expressionsAxes of lines and wordsCharacter TypesWildcardsMatch patterns using Bash featuresCharacter RangesChapter IVConditional structures in BashExpressions used with ifThe commands that follow are thenScan filesCheck the chance optionsSimple applications on the if statementText comparisonsIf / then / else is builtThe difference between [] and [[]]Examine the command line argumentsThe names of files that contain spacesNested if statementsLogical operationsUse the exit statement with ifChapter VRepetitive tasks in BashEpisode for in BashHow to make a loop for iterativeExamplesBasename commandWhile loop in BashHow to make a while loopWhile nested loopsCalculate the averageUntil loop in BashHow to make a loop untilThe Break and Continue commandsBreak commandContinue commandChapter VIFunctions in BashWhat are functions?Functions SyntaxPosition coefficients in functionsDisplaying FunctionsRecyclingAdjust the pathunset pathmungeChapter VIIWriting interactive Bash programsView user messages in BashInteractive or non-interactive programs?Use the echo commandGet user input in BashUse the read commandRequest user inputRedirection and file descriptorsRedirect erro