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| bash math with variables: Sams Teach Yourself Shell Programming in 24 Hours Sriranga Veeraraghavan, 2002 Learn how to develop powerful and robust shell scripts in order to get the most out of your Unix/Linux system. |
| bash math with variables: Advanced Bash Scripting Guide Mendel Cooper, 2014 |
| bash math with variables: From Bash to Z Shell Oliver Kiddle, Peter Stephenson, Jerry Peek, 2007-03-01 * In-depth, unique coverage of ZSH, one of most modern and powerful of all shells. Also covers Bash, the preferred shell for most serious Linux and Unix users. * Very strong author and tech review team: Co-author Peter Stephenson has been involved in the development of Zsh since the 1990s when he started to write the FAQ. For the last few years, he has served as coordinator of the shell's development. Tech Reviewers: Ed Schaefer is the Shell Corner columnist for SysAdmin Magazine and Bart Schaefer is one of the lead developers of Zsh development. * Book is immediately useful, packed with short example and suggestions that the reader can put to use in their shell environment. * Extensive coverage of interactive and advanced shell features, including shell extensions, completion functions, and shortcuts. * Great book for users of all expertise; perennial seller. |
| bash math with variables: Bash Quick Start Guide Tom Ryder, 2018-09-28 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. |
| bash math with variables: The Ultimate Linux Shell Scripting Guide Donald A. Tevault, 2024-10-18 Master Linux Shells – Your Complete Guide to Practical Success with Bash, Zsh, PowerShell Key Features Embrace Bash, Zsh, and PowerShell across Linux, macOS, Unix Seamlessly progress through chapters with conceptual explanations, illustrative examples, and immersive labs for hands-on skill development Build real-world Linux administration scripts, enhancing your troubleshooting and management skills Book DescriptionEmbark on a comprehensive journey through command shells with this hands-on manual. While Bash is a Linux staple, Z shell and PowerShell are rising stars, applicable to Linux, macOS, and Unix. Progress seamlessly through chapters, each building on the last, creating a solid foundation. Learn through a unique approach: concepts, examples, and interactive labs. These labs, nearly a hundred strong, form the core of experiential learning, essential for script creation. Focusing on Linux commands and their scripting applications, this manual is universally relevant across Linux and select Unix-like systems. It goes beyond theory, offering practical scripts for real-world Linux administration. Scripts are designed for manageability, aiding learning and troubleshooting. The goal is to nurture the ability to craft intelligent, functional shell scripts. While centered on Bash, this book offers a peek into the future with Z Shell and PowerShell, expanding your skills and adaptability. This book is systematically structured and engaging so that it will guide you to master command shells, equipping you for real-world Linux challenges.What you will learn Grasp the concept of shells and explore their diverse types for varied system interactions Master redirection, pipes, and compound commands for efficient shell operations Leverage text stream filters within scripts for dynamic data manipulation Harness functions and build libraries to create modular and reusable shell scripts Explore the basic programming constructs that apply to all programming languages Engineer portable shell scripts, ensuring compatibility across diverse platforms beyond Linux Who this book is for This book is for programmers who use the command line on Unix and Linux servers already, but don't write primarily in Bash. This book is ideal for programmers who've been using a scripting language such as Python, JavaScript or PHP, and would like to understand and use Bash more effectively. It’s also great for beginning programmers, who want to learn programming concepts. |
| bash math with variables: Mastering Unix Shell Scripting Randal K. Michael, 2011-09-14 UNIX expert Randal K. Michael guides you through every detail of writing shell scripts to automate specific tasks. Each chapter begins with a typical, everyday UNIX challenge, then shows you how to take basic syntax and turn it into a shell scripting solution. Covering Bash, Bourne, and Korn shell scripting, this updated edition provides complete shell scripts plus detailed descriptions of each part. UNIX programmers and system administrators can tailor these to build tools that monitor for specific system events and situations, building solid UNIX shell scripting skills to solve real-world system administration problems. |
| bash math with variables: Learning the Korn Shell Bill Rosenblatt, Arnold Robbins, 2002 Learning the Korn Shell is the key to the Korn shell and becoming adept at using it as an interactive command and scripting language. Readers will learn how to write many applications more easily and quickly than with other high-level languages. This newly revised title inherits a long tradition of trust among computer professionals. |
| bash math with variables: BASH SHELL: Essential Programs for Your Survival at Work Larry L. Smith, 2006-10-17 This book, for UNIX-LINUX computer users, provides the beginner AND the 'guru' with practical, real-world examples and bash shell scripts that make tough jobs easy. With this book, you can ... - Make your boss happy right NOW!- Learn a new language.- Master an old language.- Write scripts that solve problems.- Provide Quality Assurance.- Be a master troubleshooter.- Analyze logs, verify data.- Make tough jobs easy! |
| bash math with variables: Mastering Bash Giorgio Zarrelli, 2017-06-21 Your one stop guide to making the most out of Bash programming About This Book From roots to leaves, learn how to program in Bash and automate daily tasks, pouring some spice in your scripts Daemonize a script and make a real service of it, ensuring it's available at any time to process user-fed data or commands This book provides functional examples that show you practical applications of commands Who This Book Is For If you're a power user or system administrator involved in writing Bash scripts to automate tasks, then this book is for you. This book is also ideal for advanced users who are engaged in complex daily tasks. What You Will Learn Understand Bash right from the basics and progress to an advanced level Customise your environment and automate system routine tasks Write structured scripts and create a command-line interface for your scripts Understand arrays, menus, and functions Securely execute remote commands using ssh Write Nagios plugins to automate your infrastructure checks Interact with web services, and a Slack notification script Find out how to execute subshells and take advantage of parallelism Explore inter-process communication and write your own daemon In Detail System administration is an everyday effort that involves a lot of tedious tasks, and devious pits. Knowing your environment is the key to unleashing the most powerful solution that will make your life easy as an administrator, and show you the path to new heights. Bash is your Swiss army knife to set up your working or home environment as you want, when you want. This book will enable you to customize your system step by step, making your own real, virtual, home out of it. The journey will take you swiftly through the basis of the shell programming in Bash to more interesting and challenging tasks. You will be introduced to one of the most famous open source monitoring systems—Nagios, and write complex programs with it in any languages. You'll see how to perform checks on your sites and applications. Moving on, you'll discover how to write your own daemons so you can create your services and take advantage of inter-process communication to let your scripts talk to each other. So, despite these being everyday tasks, you'll have a lot of fun on the way. By the end of the book, you will have gained advanced knowledge of Bash that will help you automate routine tasks and manage your systems. Style and approach This book presents step-by-step instructions and expert advice on working with Bash and writing scripts. Starting from the basics, this book serves as a reference manual where you can find handy solutions and advice to make your scripts flexible and powerful. |
| bash math with variables: bash Cookbook Carl Albing, JP Vossen, Cameron Newham, 2007-05-24 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. |
| bash math with variables: Bash Reference Manual Chet Ramey, Brian Fox, 2002 This volume is the official reference manual for GNU Bash, the standard GNU command-line interpreter. |
| bash math with variables: Advanced Bash Scripting Guide 5.3 Volume 1 Mendel Cooper, 2010 |
| bash math with variables: Linux System Administration Tom Adelstein, Bill Lubanovic, 2007-03-27 This guide provides a solid background for Linux desktop users who want to move beyond the basics of Linux, and for experienced system administrators who are looking to gain more advanced skills. |
| bash math with variables: Linux Command Line and Shell Scripting Bible Richard Blum, Christine Bresnahan, 2020-12-08 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. |
| bash math with variables: Linux Pocket Guide Daniel J. Barrett, 2016-06-01 If you use Linux in your day-to-day work, this popular pocket guide is the perfect on-the-job reference. The third edition features new commands for processing image files and audio files, running and killing programs, reading and modifying the system clipboard, and manipulating PDF files, as well as other commands requested by readers. You�¢??ll also find powerful command-line idioms you might not be familiar with, such as process substitution and piping into bash. Linux Pocket Guide provides an organized learning path to help you gain mastery of the most useful and important commands. Whether you�¢??re a novice who needs to get up to speed on Linux or an experienced user who wants a concise and functional reference, this guide provides quick answers. Selected topics include: The filesystem and shell File creation and editing Text manipulation and pipelines Backups and remote storage Viewing and controlling processes User account management Becoming the superuser Network connections Audio and video Installing software Programming with shell scripts |
| bash math with variables: Beginning Shell Scripting Eric Foster-Johnson, John C. Welch, Micah Anderson, 2005-04-01 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 |
| bash math with variables: Using and Administering Linux: Volume 2 David Both, 2019-12-11 Experience an in-depth exploration of logical volume management and the use of file managers to manipulate files and directories and the critical concept that, in Linux, everything is a file and some fun and interesting uses of the fact that everything is a file. This book builds upon the skills you learned in Volume 1 of this course and it depends upon the virtual network and virtual machine created there. More experienced Linux users can begin with this volume and download the assigned script that will set up the VM for the start of Volume 2. Instructions with the script will provide specifications for configuration of the virtual network and the virtual machine. Refer to the volume overviews in the book's introduction to select the volume of this course most appropriate for your current skill level. You’ll see how to manage and monitor running processes, discover the power of the special filesystems, monitor and tune the kernel while it is running – without a reboot. You’ll then turn to regular expressions and the power that using them for pattern matching can bring to the command line, and learn to manage printers and printing from the command line and unlock the secrets of the hardware on which your Linux operating system is running. Experiment with command line programming and how to automate various administrative tasks, networking, and the many services that are required in a Linux system. Use the logs and journals to look for clues to problems and confirmation that things are working correctly, and learn to enhance the security of your Linux systems and how to perform easy local and remote backups. What You Will Learn Understand Logical Volume Management, using file managers, and special filesystemsExploit everything in a filePerform command line programming and basic automationConfigure printers and manage other hardwareManage system services with systemd, user management, security, and local and remote backups using simple and freely available tools Who This Book Is For Anyone who wants to continue to learn Linux in depth as an advanced user and system administrator at the command line while using the GUI desktop to leverage productivity. |
| bash math with variables: CompTIA Linux+ Study Guide Richard Blum, Christine Bresnahan, 2022-07-04 The best-selling, hands-on roadmap to acing the new Linux+ exam In the newly updated Fifth Edition of CompTIA Linux+ Study Guide: Exam XK0-005, IT industry veterans and tech education gurus Richard Blum and Christine Bresnahan deliver a concise and practical blueprint to success on the CompTIA Linux+ exam and in your first role as a Linux network or system administrator. In the book, you’ll find concrete strategies and proven techniques to master Linux system management, security, scripting, containers, automation, and troubleshooting. Every competency tested on the Linux+ exam is discussed here. You’ll also get: Hands-on Linux advice that ensures you’re job-ready on the first day of your new network or sysadmin role Test-taking tips and tactics that decrease exam anxiety and get you ready for the challenging Linux+ exam Complimentary access to the Sybex learning environment, complete with online test bank, bonus practice exams, electronic flashcards, and a searchable glossary Perfect for practicing network and system admins seeking an in-demand and valuable credential for working with Linux servers and computers, CompTIA Linux+ Study Guide: Exam XK0-005, Fifth Edition, will also earn a place in the libraries of people looking to change careers and start down an exciting new path in tech. And save 10% when you purchase your CompTIA exam voucher with our exclusive WILEY10 coupon code. |
| bash math with variables: Take Control of the Mac Command Line with Terminal, 3rd Edition Joe Kissell, 2024-02-12 Learn how to unleash your inner Unix geek! Version 3.3, updated February 12, 2024 This book introduces you to the Mac’s command line environment, teaching you how to use the Terminal utility to accomplish useful, interesting tasks that are either difficult or impossible to do in the graphical interface.n If you've ever thought you should learn to use the Unix command line that underlies macOS, or felt at sea when typing commands into Terminal, Joe Kissell is here to help! With this book, you'll become comfortable working on the Mac's command line, starting with the fundamentals and adding more advanced topics as your knowledge increases. Now includes complete coverage of Monterey, Big Sur, Catalina, and zsh! Joe includes 67 real-life recipes for tasks that are best done from the command line, as well as directions for working with permissions, carrying out grep-based searches, creating shell scripts, and installing Unix software. The book begins by teaching you these core concepts: • The differences among Unix, a command line, a shell, and Terminal • Exactly how commands, arguments, and flags work • The basics of Terminal's interface and how to customize it Next, it's on to the command line, where you'll learn: • How to navigate your Mac's directory structure • Basic file management: creating, copying, moving, renaming, opening, viewing, and deleting files • Creating symbolic links • The types of command-line programs • How to start and stop a command-line program • How to edit a text file in nano • How to customize your prompt and other shell defaults • The importance of your PATH and how to change it, if you need to • How to get help (Joe goes way beyond telling you to read the man pages) You'll extend your skills as you discover how to: • Create basic shell scripts to automate repetitive tasks. • Make shell scripts that have variables, user input, conditional statements, loops, and math. • See which programs are running and what system resources they're consuming. • Quit programs that refuse to quit normally. • Enable the command line to interact with the Finder. • Control another Mac via its command line with ssh. • Understand and change an item's permissions, owner, and group. • Run commands as the root user using sudo. • Handle output with pipe (|) or redirect (> or <). • Use grep to search for text patterns in files and filter output. • Install new command-line software from scratch or with a package manager. • Use handy shortcuts in the Terminal app itself and in zsh. Questions answered include: • What changed on the command line in recent versions of macOS? • What are the differences between the zsh shell and the bash shell? • Which shell am I using, and how can I change my default shell? • How do I quickly figure out the path to an item on my Mac? • How can I customize my Terminal window so I can see man pages behind it? • How can I make a shortcut to avoid retyping the same long command? • Is there a trick for entering a long path quickly? • What should I say when someone asks if I know how to use vi? • How do I change my prompt to suit my mood or needs? • What is Command Line Tools for Xcode? • When it comes to package managers, which one should I use? Finally, to help you put it all together, the book showcases 67 real-world recipes that combine commands to perform useful tasks, such as listing users who've logged in recently, manipulating graphics, using a separate FileVault password, creating and editing user accounts, figuring out why a disk won't eject, copying the source code of a webpage, determining which apps have open connections to the internet, flushing the DNS cache, finding out why a Mac won't sleep, sending an SMS message, and deleting stubborn items from the Trash. |
| bash math with variables: Beginning Unix Paul Love, Joe Merlino, Craig Zimmerman, Jeremy C. Reed, Paul Weinstein, 2015-03-23 Covering all aspects of the Unix operating system and assuming no prior knowledge of Unix, this book begins with the fundamentals and works from the ground up to some of the more advanced programming techniques The authors provide a wealth of real-world experience with the Unix operating system, delivering actual examples while showing some of the common misconceptions and errors that new users make Special emphasis is placed on the Apple Mac OS X environment as well as Linux, Solaris, and migrating from Windows to Unix A unique conversion section of the book details specific advice and instructions for transitioning Mac OS X, Windows, and Linux users |
| bash math with variables: Guide to UNIX Jack Dent, Tony Gaddis, 2001-10 Guide to UNIX Using Linux is a hands-on, practical guide that teaches the fundamentals of the UNIX operating system concepts, architecture and administration. These concepts are taught using Linux, a free, PC-compatible UNIX clone that is an ideal teaching tool for many basic and advanced UNIX commands. The power, stability, and flexibility of UNIX has contributed to its popularity in mission-critical business and networking applications. |
| bash math with variables: Linux Shell Scripting Cookbook Shantanu Tushar, 2013-05-21 This book is written in a Cookbook style and it offers learning through recipes with examples and illustrations. Each recipe contains step-by-step instructions about everything necessary to execute a particular task. The book is designed so that you can read it from start to end for beginners, or just open up any chapter and start following the recipes as a reference for advanced users.If you are a beginner or an intermediate user who wants to master the skill of quickly writing scripts to perform various tasks without reading the entire manual, this book is for you. You can start writing scripts and one-liners by simply looking at the similar recipe and its descriptions without any working knowledge of shell scripting or Linux. Intermediate/advanced users as well as system administrators/ developers and programmers can use this book as a reference when they face problems while coding. |
| bash math with variables: Teach Yourself UNIX Shell Programming in 14 Days Kamran Husain, 1994 Teach Yourself Shell Programming in 14 Days is a true beginning level guide to the Bourne Shell. Everyone who works in UNIX uses one of its three shells. This tutorial shows uses how to exploit the Bourne Shell to optimize their system, increase productivity, and work more efficiently. |
| bash math with variables: Linux Shell Scripting Cookbook Clif Flynt, Sarath Lakshman, Shantanu Tushar, 2017-05-29 Do amazing things with the shell About This Book Become an expert in creating powerful shell scripts and explore the full possibilities of the shell Automate any administrative task you could imagine, with shell scripts Packed with easy-to-follow recipes on new features on Linux, particularly, Debian-based, to help you accomplish even the most complex tasks with ease Who This Book Is For If you are a beginner or an intermediate Linux user who wants to master the skill of quickly writing scripts and automate tasks without reading the entire man pages, then this book is for you. You can start writing scripts and one-liners by simply looking at the relevant recipe and its descriptions without any working knowledge of shell scripting or Linux. Intermediate / advanced users, system administrators / developers, and programmers can use this book as a reference when they face problems while coding. What You Will Learn Interact with websites via scripts Write shell scripts to mine and process data from the Web Automate system backups and other repetitive tasks with crontab Create, compress, and encrypt archives of your critical data. Configure and monitor Ethernet and wireless networks Monitor and log network and system activity Tune your system for optimal performance Improve your system's security Identify resource hogs and network bottlenecks Extract audio from video files Create web photo albums Use git or fossil to manage revision control and interact with FOSS projects Create and maintain Linux containers and Virtual Machines Run a private Cloud server In Detail The shell is the most powerful tool your computer provides. Despite having it at their fingertips, many users are unaware of how much the shell can accomplish. Using the shell, you can generate databases and web pages from sets of files, automate monotonous admin tasks such as system backups, monitor your system's health and activity, identify network bottlenecks and system resource hogs, and more. This book will show you how to do all this and much more. This book, now in its third edition, describes the exciting new features in the newest Linux distributions to help you accomplish more than you imagine. It shows how to use simple commands to automate complex tasks, automate web interactions, download videos, set up containers and cloud servers, and even get free SSL certificates. Starting with the basics of the shell, you will learn simple commands and how to apply them to real-world issues. From there, you'll learn text processing, web interactions, network and system monitoring, and system tuning. Software engineers will learn how to examine system applications, how to use modern software management tools such as git and fossil for their own work, and how to submit patches to open-source projects. Finally, you'll learn how to set up Linux Containers and Virtual machines and even run your own Cloud server with a free SSL Certificate from letsencrypt.org. Style and approach This book will take you through useful real-world recipes designed to make your daily life easier when working with the shell. |
| bash math with variables: Mastering UNIX Katherine Wrightson, Joseph Merlino, 2006-02-20 All Your Unix Questions—Answered! Mastering Unix is your source for everything you need to know about today's most influential operating system. Inside, two Unix experts provide essential information on a wide range of Unix flavors, concentrating on Linux, FreeBSD, and Solaris8. Whether you're just getting started with Unix or want a resource to help you handle system administration's toughest chores, this example-filled book will answer all your questions and promote the skills you need to succeed. Coverage includes: Using the Unix shell Using X-Windows Configuring and using remote services Connecting to the Internet Creating user accounts Creating user groups Designing and building a network Using Unix utilities Programming the shell Setting up and administering a mail server Setting up and administering a news server Setting up and administering a Web server Implementing effective security practices Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file. |
| bash math with variables: CompTIA A+ Complete Study Guide Quentin Docter, Jon Buhagiar, 2022-03-17 The Fifth Edition of the CompTIA A+ Complete Study Guide: Core 1 Exam 220-1101 and Core 2 Exam 220-1102 offers accessible and essential test preparation material for the popular A+ certification. Providing full coverage of all A+ exam objectives and competencies covered on the latest Core 1 and Core 2 exams, the book ensures you'll have the skills and knowledge to confidently succeed on the test and in the field as a new or early-career computer technician. The book presents material on mobile devices, hardware, networking, virtualization and cloud computing, network, hardware, and software troubleshooting, operating systems, security, and operational procedures. Comprehensive discussions of all areas covered by the exams will give you a head start as you begin your career as a computer technician. This new edition also offers: Accessible and easy-to-follow organization perfect to prepare you for one of the most popular certification exams on the market today Opportunities to practice skills that are in extraordinary demand in the IT industry Access to the Sybex online test bank, with chapter review questions, full-length practice exams, hundreds of electronic flashcards, and a glossary of key terms, all supported by Wiley's support agents who are available 24x7 via email or live chat to assist with access and login questions Perfect for anyone prepping for the Core 1 and Core 2 A+ exams, CompTIA A+ Complete Study Guide: Core 1 Exam 220-1101 and Core 2 Exam 220-1102 is a must-have resource for new and early-career computer technicians seeking to improve their skills and increase their efficacy in the field. And save 10% when you purchase your CompTIA exam voucher with our exclusive WILEY10 coupon code. |
| bash math with variables: LPIC-1 Linux Professional Institute Certification Study Guide Christine Bresnahan, Richard Blum, 2019-10-29 The bestselling study guide for the popular Linux Professional Institute Certification Level 1 (LPIC-1). The updated fifth edition of LPIC-1: Linux Professional Institute Certification Study Guide is a comprehensive, one-volume resource that covers 100% of all exam objectives. Building on the proven Sybex Study Guide approach, this essential resource offers a comprehensive suite of study and learning tools such as assessment tests, hands-on exercises, chapter review questions, and practical, real-world examples. This book, completely updated to reflect the latest 101-500 and 102-500 exams, contains clear, concise, and user-friendly information on all of the Linux administration topics you will encounter on test day. Key exam topics include system architecture, Linux installation and package management, GNU and UNIX commands, user interfaces and desktops, essential system services, network and server security, and many more. Linux Servers currently have a 20% market share which continues to grow. The Linux OS market saw a 75% increase from last year and is the third leading OS, behind Windows and MacOS. There has never been a better time to expand your skills, broaden your knowledge, and earn certification from the Linux Professional Institute. A must-have guide for anyone preparing for the 101-500 and 102-500 exams, this study guide enables you to: Assess your performance on practice exams to determine what areas need extra study Understand and retain vital exam topics such as administrative tasks, network configuration, booting Linux, working with filesystems, writing scripts, and using databases Gain insights and tips from two of the industry’s most highly respected instructors, consultants, and authors Access Sybex interactive tools that include electronic flashcards, an online test bank, customizable practice exams, bonus chapter review questions, and a searchable PDF glossary of key terms LPIC-1: Linux Professional Institute Certification Study Guide is ideal for network and system administrators studying for the LPIC-1 exams, either for the first time or for the purpose of renewing their certifications. |
| bash math with variables: CompTIA Linux+ Study Guide Christine Bresnahan, Richard Blum, 2019-06-19 The bestselling study guide completely updated for the NEW CompTIA Linux+ Exam XK0-004 This is your one-stop resource for complete coverage of Exam XK0-004, covering 100% of all exam objectives. You'll prepare for the exam smarter and faster with Sybex thanks to superior content including, assessment tests that check exam readiness, objective map, real-world scenarios, hands-on exercises, key topic exam essentials, and challenging chapter review questions. Linux is a UNIX-based operating system originally created by Linus Torvalds with the help of developers around the world. Developed under the GNU General Public License, the source code is free. Because of this Linux is viewed by many organizations and companies as an excellent, low-cost, secure alternative to expensive OSs, such as Microsoft Windows. The CompTIA Linux+ exam tests a candidate's understanding and familiarity with the Linux Kernel. As the Linux server market share continues to grow, so too does demand for qualified and certified Linux administrators. Building on the popular Sybex Study Guide approach, this book will provide 100% coverage of the NEW Linux+ Exam XK0-004 objectives. The book contains clear and concise information on all Linux administration topic, and includes practical examples and insights drawn from real-world experience. Hardware and System Configuration Systems Operation and Maintenance Security Linux Troubleshooting and Diagnostics Automation and Scripting You’ll also have access to an online test bank, including a bonus practice exam, electronic flashcards, and a searchable PDF of key terms. |
| bash math with variables: Multimedia Tools for Communicating Mathematics Jonathan Borwein, Maria H. Morales, Konrad Polthier, Jose F. Rodrigues, 2012-12-06 This book on multimedia tools for communicating mathematics arose from presentations at an international workshop organized by the Centro de Matemtica e Aplicacoes Fundamentais at the University of Lisbon, in November 2000, with the collaboration of the Sonderforschungsbereich 288 at the University of Technology in Berlin, and of the Centre for Experimental and Constructive Mathematics at Simon Fraser University in Burnaby, Canada. The MTCM2000 meeting aimed at the scientific methods and algorithms at work inside multimedia tools, and it provided an overview of the range of present multimedia projects, of their limitations and the underlying mathematical problems. This book presents some of the tools and algorithms currently being used to create new ways of making enhanced interactive presentations and multimedia courses. It is an invaluable and up-to-date reference book on multimedia tools presently available for mathematics and related subjects. |
| bash math with variables: Mastering Linux Administration Alexandru Calcatinge, Julian Balog, 2024-03-22 A one-stop Linux administration guide to developing advanced strategies for managing both on-premises and cloud environments while implementing the latest Linux updates in your data center Key Features Learn how to deploy Linux to the cloud with AWS and Azure Familiarize yourself with Docker and Ansible for automation and Kubernetes for container management Become proficient in everyday Linux administration tasks by mastering the Linux command line and automation techniques Purchase of the print or Kindle book includes a free PDF eBook Book DescriptionHarness the power of Linux in modern data center management, leveraging its unparalleled versatility for efficiently managing your workloads in on-premises and cloud environments. In this second edition, you'll find updates on the latest advancements in Linux administration including containerization, shell scripting, and hypervisors. Written by an experienced Linux trainer, this book will start you off with Linux installation on on-premises systems. As you progress, you’ll master the Linux command line, files, packages, and filesystems. You'll explore essential Linux commands and techniques to secure your Linux environment. New to this edition is a chapter on shell scripting, providing structured guidance on using shell programming for basic Linux automation. This book also delves into the world of containers, with two new chapters dedicated to Docker containers and hypervisors, including KVM virtual machines. Once adept with Linux containers, you'll learn about modern cloud technologies, managing and provisioning container workloads using Kubernetes, and automating system tasks using Ansible. Finally, you'll get to grips with deploying Linux to the cloud using AWS and Azure-specific tools. By the end of this Linux book, you'll have mastered everyday administrative tasks, seamlessly navigating workflows spanning from on-premises to the cloud. What you will learn Discover how to create and use bash scripts to automate tasks Navigate containerized workflows efficiently using Docker and Kubernetes Deploy Linux to the cloud using AWS and Azure Automate your configuration management workloads with Ansible Find out how Linux security works and how to configure SELinux, AppArmor, and Linux iptables Work with virtual machines and containers and understand container orchestration with Kubernetes Explore the most widely used commands for managing the Linux filesystem, network, security, and more Who this book is for Whether you’re a new or seasoned Linux administrator seeking to understand modern concepts of Linux system administration, this book is a valuable resource packed with new and updated Linux insights. Windows System Administrators looking to extend their knowledge to the Linux OS will also benefit from this book’s latest edition. No prior knowledge is needed, all you need is a willingness to learn. |
| bash math with variables: Shell Scripting Recipes Chris Johnson, 2006-11-03 *Author is active and well-known within the community *Comprehensive and example-driven, for faster completion of administration tasks *Scripts are POSIX-compliant; supported by all mainstream shells *All examples contain the problem, the solution, and the code needed to implement the solution. |
| bash math with variables: Linux For Dummies Richard Blum, 2020-09-01 Your step-by-step guide to the latest in Linux Nine previous editions of this popular benchmark guide can’t be wrong! Whether you’re new to Linux and need a step-by-step guide or are a pro who wants to catch up with recent distributions, Linux For Dummies, 10th Edition has your back. Covering everything from installation to automation, this updated edition focuses on openSUSE and Ubuntu and includes new and refreshed material—as well as chapters on building a web server and creating simple shell scripts. In his friendly, no-jargon style, IT professional and tech higher education instructor Richard Blum draws on more than 10 years of teaching to show you just why Linux's open source operating systems are relied on to run a huge proportion of the world’s online infrastructure, servers, supercomputers, and NAS devices—and how you can master them too. Study the thinking behind Linux Choose the right installation approach Pick up the basics—from prepping to desktops Get fancy with music, video, movies, and games Whatever your Linux needs—work, fun, or just a hobby—this bestselling, evergreen guide will get you up and coding in the open source revolution in no time at all. |
| bash math with variables: Learn Git in a Month of Lunches Rick Umali, 2015-09-01 Summary Learn Git in a Month of Lunches introduces the discipline of source code control using Git. Whether you're a newbie or a busy pro moving your source control to Git, you'll appreciate how this book concentrates on the components of Git you'll use every day. In easy-to-follow lessons designed to take an hour or less, you'll dig into Git's distributed collaboration model, along with core concepts like committing, branching, and merging. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Book Git is the source code control system preferred by modern development teams. Its decentralized architecture and lightning-fast branching let you concentrate on your code instead of tedious version control tasks. At first, Git may seem like a sprawling beast. Fortunately, to get started you just need to master a few essential techniques. Read on! Learn Git in a Month of Lunches introduces the discipline of source code control using Git. Helpful for both newbies who have never used source control and busy pros, this book concentrates on the components of Git you'll use every day. In easy-to-follow lessons that take an hour or less, you'll dig into Git's distributed collaboration model, along with core concepts like committing, branching, and merging. This book is a road map to the commands and processes you need to be instantly productive. What's Inside Start from square one—no experience required The most frequently used Git commands Mental models that show how Git works Learn when and how to branch code About the Reader No previous experience with Git or other source control systems is required. About the Author Rick Umali uses Git daily as a developer and is a skilled consultant, trainer, and speaker. Table of Contents Before you begin An overview of Git and version control Getting oriented with Git Making and using a Git repository Using Git with a GUI Tracking and updating files in Git Committing parts of changes The time machine that is Git Taking a fork in the road Merging branches Cloning Collaborating with remotes Pushing your changes Keeping in sync Software archaeology Understanding git rebase Workflows and branching conventions Working with GitHub Third-party tools and Git Sharpening your Git |
| bash math with variables: Expert Shell Scripting Ron Peters, 2009-01-29 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. |
| bash math with variables: Guide to UNIX Using Linux Michael J. Palmer, Jack Dent, Tony Gaddis, 2005 Guide to UNIX using Linux, third edition is a practical guide to the fundamentals of UNIX concepts, architecture, and administation. This book is updated and redesigned to provide student more information about UNIX and Linux capabilities. The conceptsin this book are designed to prepare students for working on PCs, servers, workstations, and mainframe computers. Learning is reinforced with hands-on activities and discovery exercises. Step by step, students will learn command-line features, how to run utilities and create applications, how to develop Perl and CGI scripts, and how to use the GNOME desktop. |
| bash math with variables: Numerical Python Robert Johansson, 2015-10-07 Numerical Python by Robert Johansson shows you how to leverage the numerical and mathematical modules in Python and its Standard Library as well as popular open source numerical Python packages like NumPy, FiPy, matplotlib and more to numerically compute solutions and mathematically model applications in a number of areas like big data, cloud computing, financial engineering, business management and more. After reading and using this book, you'll get some takeaway case study examples of applications that can be found in areas like business management, big data/cloud computing, financial engineering (i.e., options trading investment alternatives), and even games. Up until very recently, Python was mostly regarded as just a web scripting language. Well, computational scientists and engineers have recently discovered the flexibility and power of Python to do more. Big data analytics and cloud computing programmers are seeing Python's immense use. Financial engineers are also now employing Python in their work. Python seems to be evolving as a language that can even rival C++, Fortran, and Pascal/Delphi for numerical and mathematical computations. |
| bash math with variables: Mac OS X Tiger Unleashed John Ray, William Ray, 2005 A best-seller that once showed you how to reign in a panther can now show you how to tame a Tiger. Mac OS X Tiger Unleashed is the most comprehensive guide to unlocking the full power of Mac OS X Tiger that you can find. Written by Unix/BSD experts and Mac users, John Ray and William C. Ray, you will go inside the Mac OS X Tiger operating system and the underlying BSD environment. In-depth background coverage and useful hands-on lessons will help you understand the changes with the new version and master the new features. Lessons include: Working with files and applications Running classic Mac OS applications Native utilities and applications Intalling third-party applications Third-party BSD command-line applications Configuring the system using BSD utilities Remote administration Serving a Windows network Routine maintenance Learn to deal with the most trouble-prone aspects of the Mac OS X Tiger user interface and how to exploit the new features to get the most out of your system with Mac OS X Tiger Unleashed. |
| bash math with variables: Shell Scripting Steve Parker, 2011-08-17 A compendium of shell scripting recipes that can immediately be used, adjusted, and applied The shell is the primary way of communicating with the Unix and Linux systems, providing a direct way to program by automating simple-to-intermediate tasks. With this book, Linux expert Steve Parker shares a collection of shell scripting recipes that can be used as is or easily modified for a variety of environments or situations. The book covers shell programming, with a focus on Linux and the Bash shell; it provides credible, real-world relevance, as well as providing the flexible tools to get started immediately. Shares a collection of helpful shell scripting recipes that can immediately be used for various of real-world challenges Features recipes for system tools, shell features, and systems administration Provides a host of plug and play recipes for to immediately apply and easily modify so the wheel doesn't have to be reinvented with each challenge faced Come out of your shell and dive into this collection of tried and tested shell scripting recipes that you can start using right away! |
| bash math with variables: Wicked Cool Shell Scripts, 2nd Edition Dave Taylor, Brandon Perry, 2016-10-15 Shell scripts are an efficient way to interact with your machine and manage your files and system operations. With just a few lines of code, your computer will do exactly what you want it to do. But you can also use shell scripts for many other essential (and not-so-essential) tasks. This second edition of Wicked Cool Shell Scripts offers a collection of useful, customizable, and fun shell scripts for solving common problems and personalizing your computing environment. Each chapter contains ready-to-use scripts and explanations of how they work, why you’d want to use them, and suggestions for changing and expanding them. You'll find a mix of classic favorites, like a disk backup utility that keeps your files safe when your system crashes, a password manager, a weather tracker, and several games, as well as 23 brand-new scripts, including: – ZIP code lookup tool that reports the city and state – Bitcoin address information retriever – suite of tools for working with cloud services like Dropbox and iCloud – for renaming and applying commands to files in bulk – processing and editing tools Whether you want to save time managing your system or just find new ways to goof off, these scripts are wicked cool! |
| bash math with variables: Classic Shell Scripting Arnold Robbins, Nelson H. F. Beebe, 2005-05-16 Shell scripting skills never go out of style. It's the shell that unlocks the real potential of Unix. Shell scripting is essential for Unix users and system administrators-a way to quickly harness and customize the full power of any Unix system. With shell scripts, you can combine the fundamental Unix text and file processing commands to crunch data and automate repetitive tasks. But beneath this simple promise lies a treacherous ocean of variations in Unix commands and standards. Classic Shell Scripting is written to help you reliably navigate these tricky waters.Writing shell scripts requires more than just a knowledge of the shell language, it also requires familiarity with the individual Unix programs: why each one is there, how to use them by themselves, and in combination with the other programs. The authors are intimately familiar with the tips and tricks that can be used to create excellent scripts, as well as the traps that can make your best effort a bad shell script. With Classic Shell Scripting you'll avoid hours of wasted effort. You'll learn not only write useful shell scripts, but how to do it properly and portably.The ability to program and customize the shell quickly, reliably, and portably to get the best out of any individual system is an important skill for anyone operating and maintaining Unix or Linux systems. Classic Shell Scripting gives you everything you need to master these essential skills. |
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Bash - GNU Project - Free Software Foundation
Sep 22, 2020 · Bash is the GNU Project's shell—the Bourne Again SHell. This is an sh-compatible shell that incorporates useful features from the Korn shell (ksh) and the C shell (csh). It is …
How to Install Bash on Windows 11 - How-To Geek
Mar 18, 2022 · Bash, the default shell on most Linux distributions, runs better than ever on Windows 11 thanks to upgrades to the Windows Subsystem for Linux. Here's how you install the Bourne …
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Bash (Unix shell) - Wikipedia
In computing, Bash (short for "Bourne Again SHell") [6] is an interactive command interpreter and command programming language developed for UNIX-like operating systems. [7]
Introduction to Bash and Bash Scripting - GeeksforGeeks
Apr 28, 2025 · In this article we discuss Bash scripting which plays a vital role in automating tasks within the Linux environment. As a command-line interpreter, Bash offers simplicity and ease of …
What Is Bash in Linux? - howtouselinux
Mar 7, 2024 · Bash is a commonly-used shell in many Linux distributions. Bash is a command interpreter. It is a command-line–only interface containing a handful of built-in commands; it has …
Bash: Online Shopping - Shop Clothing, Sports, Home ...
Bash is a fashion and lifestyle shopping platform in South Africa offering over 200 of the world’s best brands and 2000+ new items added weekly.
Bash - GNU Project - Free Software Foundation
Sep 22, 2020 · Bash is the GNU Project's shell—the Bourne Again SHell. This is an sh-compatible shell that incorporates useful features from the Korn shell (ksh) and the C shell (csh). It is …
How to Install Bash on Windows 11 - How-To Geek
Mar 18, 2022 · Bash, the default shell on most Linux distributions, runs better than ever on Windows 11 thanks to upgrades to the Windows Subsystem for Linux. Here's how you install the Bourne …
Clothing, footwear & women's accessories | ba&sh official website
Discover the world of ba&sh: resolutely feminine and unique collections, ahead of the trends. Take advantage of free delivery and easy returns.
Bash (Unix shell) - Wikipedia
In computing, Bash (short for "Bourne Again SHell") [6] is an interactive command interpreter and command programming language developed for UNIX-like operating systems. [7]
Introduction to Bash and Bash Scripting - GeeksforGeeks
Apr 28, 2025 · In this article we discuss Bash scripting which plays a vital role in automating tasks within the Linux environment. As a command-line interpreter, Bash offers simplicity and ease of …
What Is Bash in Linux? - howtouselinux
Mar 7, 2024 · Bash is a commonly-used shell in many Linux distributions. Bash is a command interpreter. It is a command-line–only interface containing a handful of built-in commands; it has …
