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Beginning Shell Scripting

Beginning Shell Scripting

Author: Eric Foster-Johnson

Publisher: John Wiley & Sons

ISBN: 9780764597916

Category: Computers

Page: 528

View: 864

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Covering all major platforms-Linux, Unix, Mac OS X, and Windows-this guide shows programmers and power users how to customize an operating system, automate commands, and simplify administration tasks using shell scripts Offers complete shell-scripting instructions, robust code examples, and full scripts for OS customization Covers shells as a user interface, basic scripting techniques, script editing and debugging, graphing data, and simplifying administrative tasks In addition to Unix and Linux scripting, the book covers the latest Windows scripting techniques and offers a complete tutorial on Mac OS X scripting, including detailed coverage of mobile file systems, legacy applications, Mac text editors, video captures, and the Mac OS X Open Scripting Architecture

Beginning Portable Shell Scripting

Beginning Portable Shell Scripting

Author: Peter Seebach

Publisher: Apress

ISBN: 9781430210436

Category: Computers

Page: 376

View: 449

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Portable shell scripting is the future of modern Linux, OS X, and Unix command–line access. Beginning Portable Shell Scripting: From Novice to Professional teaches shell scripting by using the common core of most shells and expands those principles to all of scripting. You will learn about portable scripting and how to use the same syntax and design principles for all shells. You’ll discover about the interaction between shells and other scripting languages like Ruby and Python, and everything you learn will be shown in context for Linux, OS X, bash, and AppleScript. What you’ll learn This book will prime you on not just shell scripting, but also the modern context of portable shell scripting. You will learn The core Linux/OS X shell constructs from a portability point of view How to write scripts that write other scripts, and how to write macros and debug them How to write and design shell script portably from the ground up How to use programmable utilities and their inherent portability to your advantage, while pinpointing potential traps Pulling everything together, how to engineer scripts that play well with Python and Ruby, and even run on embedded systems Who this book is for This book is for system administrators, programmers, and testers working across Linux, OS X, and the Unix command line. Table of Contents Introduction to Shell Scripting Patterns and Regular Expressions Basic Shell Scripting Core Shell Features Explained Shells Within Shells Invocation and Execution Shell Language Portability Utility Portability Bringing It All Together Shell Script Design Mixing and Matching

bash Cookbook

bash Cookbook

Author: Carl Albing

Publisher: "O'Reilly Media, Inc."

ISBN: 0596554702

Category: Computers

Page: 630

View: 354

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The key to mastering any Unix system, especially Linux and Mac OS X, is a thorough knowledge of shell scripting. Scripting is a way to harness and customize the power of any Unix system, and it's an essential skill for any Unix users, including system administrators and professional OS X developers. But beneath this simple promise lies a treacherous ocean of variations in Unix commands and standards. bash Cookbook teaches shell scripting the way Unix masters practice the craft. It presents a variety of recipes and tricks for all levels of shell programmers so that anyone can become a proficient user of the most common Unix shell -- the bash shell -- and cygwin or other popular Unix emulation packages. Packed full of useful scripts, along with examples that explain how to create better scripts, this new cookbook gives professionals and power users everything they need to automate routine tasks and enable them to truly manage their systems -- rather than have their systems manage them.

Mastering Linux Shell Scripting,

Mastering Linux Shell Scripting,

Author: Mokhtar Ebrahim

Publisher: Packt Publishing Ltd

ISBN: 9781788990158

Category: Computers

Page: 284

View: 305

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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.

Learning C Shell Scripting Gently

Learning C Shell Scripting Gently

Author: Liza Noble

Publisher: Independently Published

ISBN: 9798539295707

Category:

Page: 240

View: 539

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This is the only book on C shell scripting that goes in-depth, from variable management to the intricacies of scripting. The book is written in such a way that even a computer novice can learn from it. To say that C shell is not used is not true at all. As per the TIOBE Index, bash and C shell have similar kinds of popularity. This book has the following aims:1) Develop an understanding of the C shell environment. 2) Understanding Variables thoroughly.3) Extensive look at various scripting mechanisms to lay a solid foundation so that you can succeed in any programming language that you feel that you have to learn to progress in your career. 4) Those who are using tcsh shell will benefit from reading this book.ContentIntroductionWhy should I learn C shell (csh) shell scripting?PrerequisitesThe infrastructure used to create this bookChapter 1: What is a Shell?Finding out your ShellChapter 2: Fundamentals of ShellStreamsRedirectionVariablesChapter 3: C shell (csh) EssentialsRedirection of the Error streamCommand combinationsAND operator &&OR operator Single and double quotes backslash and backticksCommand substitution in C shellChapter 4: C Shell User CustomizationThe .login and .cshrc files for personal customization.The csh.login and csh.cshrc file for System Wide CustomizationChapter 5: Regular expressions and grep, sed, find and awkMeta CharactersGrep CommandThe sed commandThe -n and p command of sedThe find commandThe awk commandSyntax of awkExamples of awkA note about the buffersUsing Selection conditions in awk$NF and other variables in awkSimple formattingCombining commandsAwk BlocksChapter 6: Advanced take on Shell FundamentalsVariablesUser-created variablesExisting or Predefined VariablesEnvironmental VariablesAliasesVarious options of echo commandThe \b character code - backspaceThe -n syntax - no new lineThe tab \t character code: The form feed \f character codeThe vertical tab \v character code: Exit commandReading from the command linePositional Parameters in C ShellOperators and their typesArithmetical operatorsRelational operatorsFile testing operatorsLogical OperatorsChapter 7: Beginning C Shell ScriptingIf-then-else: Decision MakingSupported Syntaxes of If-Then-ElsePutting command outputs inside variables using back ticksScriptsSwitch-Case DecisionLoopingWhile loopingForeach loopingChapter 8: Advanced Techniques and Scripting in C shellBreak and Continue command: Repeat looping: Parameters Again: Script name Identifier $0Parameter counter $#argvParameter lister $argvShift commandIntroducing ArraysChapter 9 Frequently Asked QuestionsWhat is the difference between using source command and executing a script normally?How can I initiate an infinite loop using "while" in BASH and C shells?What is the significance of exit 1, exit 2 and exit 3 etc. in the shell scripts?How do I control and validate input of arguments to the script?How do I troubleshoot my C shell scripts?Is it possible to accomplish file parsing in C shell scripts?

Expert Shell Scripting

Expert Shell Scripting

Author: Ron Peters

Publisher: Apress

ISBN: 9781430218425

Category: Computers

Page: 320

View: 645

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System administrators need libraries of solutions that are ingenious but understandable. They don't want to reinvent the wheel, but they don't want to reinvent filesystem management either! Expert Shell Scripting is the ultimate resource for all working Linux, Unix, and OS X system administrators who would like to have short, succinct, and powerful shell implementations of tricky system scripting tasks. Automating small to medium system management tasks Analyzing system data and editing configuration files Scripting Linux, Unix, and OS X applications using bash, ksh, et al.

Learning Linux Shell Scripting

Learning Linux Shell Scripting

Author: Ganesh Sanjiv Naik

Publisher: Packt Publishing Ltd

ISBN: 9781788991537

Category: Computers

Page: 332

View: 514

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Break through the practice of writing tedious code with shell scripts Key Features Learn to impeccably build shell scripts and develop advanced applications Create smart solutions by writing and debugging scripts A step-by-step tutorial to automate routine tasks by developing scripts Book Description Linux is the most powerful and universally adopted OS. Shell is a program that gives the user direct interaction with the operating system. Scripts are collections of commands that are stored in a file. The shell reads this file and acts on commands as if they were typed on the keyboard. Learning Linux Shell Scripting covers Bash, GNU Bourne Again Shell, preparing you to work in the exciting world of Linux shell scripting. CentOS is a popular rpm-based stable and secured Linux distribution. Therefore, we have used CentOS distribution instead of Ubuntu distribution. Linux Shell Scripting is independent of Linux distributions, but we have covered both types of distros. We start with an introduction to the Shell environment and basic commands used. Next, we explore process management in Linux OS, real-world essentials such as debugging and perform Shell arithmetic fluently. You'll then take a step ahead and learn new and advanced topics in Shell scripting, such as decision making, starting up a system, and customizing a Linux environment. You will also learn about grep, stream editor, and AWK, which are very powerful text filters and editors. Finally, you'll get to grips with taking backup, using other language scripts in Shell Scripts as well as automating database administration tasks for MySQL and Oracle. By the end of this book, you will be able to confidently use your own shell scripts in the real world. What you will learn Familiarize yourself with the various text filtering tools available in Linux Understand expressions and variables and how to use them practically Automate decision-making and save a lot of time and effort of revisiting code Get to grips with advanced functionality such as using traps, dialogs to develop screens & Database administration such as MySQL or Oracle Start up a system and customize a Linux system Taking backup of local or remote data or important files. Use existing other language scripts such as Python, Perl & Ruby in Shell Scripts Who this book is for Learning Linux Shell Scripting is ideal for those who are proficient at working with Linux and want to learn about shell scripting to improve their efficiency and practical skills.

Shell Scripting

Shell Scripting

Author: Jaosn Cannon

Publisher: CreateSpace

ISBN: 151738043X

Category:

Page: 98

View: 563

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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!

Linux Command Line and Shell Scripting Bible

Linux Command Line and Shell Scripting Bible

Author: Richard Blum

Publisher: John Wiley & Sons

ISBN: 9781119700913

Category: Computers

Page: 832

View: 375

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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.

Linux Shell Scripting Essentials

Linux Shell Scripting Essentials

Author: Sinny Kumari

Publisher: Packt Publishing Ltd

ISBN: 9781783552375

Category: Computers

Page: 282

View: 619

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Learn shell scripting to solve complex shell-related problems and to efficiently automate your day-to-day tasks About This Book Familiarize yourself with the terminal by learning about powerful shell features Automate tasks by writing shell scripts for repetitive work Packed with easy-to-follow, hands-on examples to help you write any type of shell script with confidence Who This Book Is For This 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 Learn Write effective shell scripts easily Perform search operations and manipulate large text data with a single shell command Modularize reusable shell scripts by creating shell libraries Redirect input, output, and errors of a command or script execution to other streams Debug code with different shell debugging techniques to make your scripts bug-free Manage processes, along with the environment variables needed to execute them properly Execute and embed other languages in your scripts Manage creation, deletion, and search operations in files In Detail Shell 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 approach This book is a pragmatic guide to writing efficient shell programs, complete with hands-on examples and tips.

Beginning Linux Programming

Beginning Linux Programming

Author: Neil Matthew

Publisher: Wrox

ISBN: 1861002971

Category: Information technology

Page: 945

View: 659

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Matthews offers a revised edition of the bestselling Linux programming tutorial, which features code tested with the latest 2.2 kernel and tool version, and subject coverage updated and expanded.

Classic Shell Scripting

Classic Shell Scripting

Author: Arnold Robbins

Publisher: "O'Reilly Media, Inc."

ISBN: 9780596005955

Category: Computers

Page: 534

View: 241

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Describes how to create and customize shell scrips for UNIX.