Itâ??s simple: if you want to interact deeply with Mac OS X, Linux, and other Unix-like systems, you need to know how to work with the Bash shell. This concise little book puts all of the essential information about Bash right at your fingertips.Youâ??ll quickly find answers to the annoying questions that generally come up when youâ??re writing shell scripts: What characters do you need to quote? How do you get variable substitution to do exactly what you want? How do you use arrays? Updated for Bash version 4.4, this book has the answers to these and other problems in a format that makes browsing quick and easy.Topics include:Invoking the shellSyntaxFunctions and variablesArithmetic expressionsCommand historyProgrammable completionJob controlShell optionsCommand executionCoprocessesRestricted shellsBuilt-in commands Read more

Best-selling guide to the inner workings of the Linux operating system with over 50,000 copies sold since its original release in 2014. Unlike some operating systems, Linux doesn’t try to hide the important bits from you—it gives you full control of your computer. But to truly master Linux, you need to understand its internals, like how the system boots, how networking works, and what the kernel actually does. In this third edition of the bestselling How Linux Works, author Brian Ward peels back the layers of this well-loved operating system to make Linux internals accessible. This edition has been thoroughly updated and expanded with added coverage of Logical Volume Manager (LVM), virtualization, and containers. You'll learn:   • How Linux boots, from boot loaders to init (systemd)   • How the kernel manages devices, device drivers, and processes   • How networking, interfaces, firewalls, and servers work   • How development tools work and relate to shared libraries   • How to write effective shell scripts You’ll also explore the kernel and examine key system tasks inside user space, including system calls, input and output, and filesystems. With its combination of background, theory, real-world examples, and patient explanations, How Linux Works, 3rd edition will teach you what you need to know to solve pesky problems and take control of your operating system. Read more

The Easy Way to Set Up Your Own Home Server – Even Without Prior Knowledge!Do you want to build your own home server to control your smart home devices, block ads, and create secure local storage?Would you like to expand your IT skills while setting up a cost-effective and flexible solution for your home?Are you tired of standard solutions and want to manage your own system, perfectly tailored to your needs?If you answered “yes” to any of these questions, then this book is perfect for you because...“Your Home Server with Proxmox” will guide you step by step in setting up your own server with Proxmox while integrating three essential tools: Home Assistant, Pi-hole, and TrueNAS. No prior knowledge required—completely independent of expensive commercial solutions!What You’ll Learn in This Book:Proxmox as the Core: Learn how to set up virtual machines and containers with Proxmox to efficiently and securely integrate all your applications.Home Assistant for Your Smart Home: Manage all your smart home devices—from lights to thermostats—on a single platform.Pi-hole for More Privacy: Block ads and tracking across your entire network, improving both speed and security.TrueNAS for Your Storage: Build a secure local storage system that you can access anytime.Why This Book?Beginner-Friendly & Practical: Every step is clearly explained—even without prior IT knowledge.Detailed Instructions: From hardware selection to installation and advanced configurations, everything is covered.Maximum Control: Take full control of your smart home and network—everything runs securely and efficiently on your own server.📌 Practical Tips: Save time and effort with best practices and helpful real-world tips.Start Your "Home Server" Project Now!With this guide, you’ll quickly set up a powerful home server that meets all your needs—secure, customizable, and efficient. Become your own system administrator and design your digital home exactly the way you want it!Let’s get started—enjoy setting up your home server! 🚀 Read more

Linux Shell Scripting: From Zero to Beast Mode is the ultimate guide for anyone looking to master the art of Linux scripting from scratch, without unnecessary complications. With a clear, dynamic approach packed with practical exercises, this book is designed for both curious beginners and seasoned professionals seeking to elevate their skills to the next level.In a world increasingly driven by technology, knowing how to automate tasks, manage systems, and solve problems efficiently is an essential skill. Linux Shell Scripting: From Zero to Beast Mode takes you step by step into this fascinating universe with a method that ensures effective learning without frustration.What Makes This Book Unique?Over 200 solved examples: Learn through practical exercises that address real-world problems. Each example is designed to teach you something useful and applicable, from basic commands to more advanced scripts you can use daily as a system administrator.Stress-free learning: This book is written in a friendly and accessible tone, avoiding unnecessary jargon that often makes learning scripting an intimidating task. Here, there’s no room for unnecessary complications!Projects that prepare you for the real world: In addition to individual examples, you’ll find exercises that challenge you to build complete, functional scripts. Master tasks like automated backups, log analysis, user management, and much more.Content for all levels: Are you a beginner? No worries, we start from scratch. Do you already have some experience? Great, this book will help you unlock your full potential with more advanced chapters and challenging exercises.What Will You Learn in This Book?The fundamentals of Linux Shell Scripting: commands, syntax, variables, loops, and conditionals.Techniques to automate repetitive tasks and save time.Methods to efficiently manage systems, from user creation to permission configurations.Best practices for writing robust, reusable, and well-documented scripts.Why Do You Need This Book?The job market is constantly evolving, and IT professionals with Linux Shell Scripting skills have an undeniable competitive advantage. This book not only provides you with technical knowledge but also gives you the confidence to apply it in real-world situations, whether managing servers, optimizing business processes, or simply boosting personal productivity.Moreover, Linux Shell Scripting: From Zero to Beast Mode is not just a book—it’s an investment in your professional development. Every chapter is designed to help you progress practically, without wasting time on complex theories that add little immediate value.Who Is This Book For?IT professionals looking to automate tasks and improve efficiency.Computer science students wanting to build a solid foundation in scripting.System administrators seeking to enhance Linux server management.Developers needing to integrate scripts into their projects.Anyone interested in learning a practical and highly in-demand skill.With Linux Shell Scripting: From Zero to Beast Mode, you’ll go from being a beginner to an expert, achieving practical mastery in scripting that will open doors in the professional world. Don’t wait any longer to unlock your full potential!Click "Buy Now" and take the first step to becoming a Linux Shell Scripting master. 🚀 Read more

The Linux Mint Beginner's Guide (Second Edition) will show you how to get the most out of Linux Mint, from using the Cinnamon desktop environment to advanced command-line tasks. In the Guide, you will learn how to: -Install Linux Mint. -Use the desktop environment. -Manage files and folders. -Manage users, groups, and file permissions. -Install software on a Linux Mint system, both from the command line and the GUI. -Configure network settings. -Use the vi editor to edit system configuration files. -Install and configure a Samba server for file sharing. -Install SSH for remote system control using public key/private key encryption. -Install a LAMP server. -Install web applications like WordPress. -Configure an FTP server. -Manage ebooks. -Convert digital media. -And many other topics. ABOUT THE AUTHOR Standing over six feet tall, Jonathan Moeller has the piercing blue eyes of a Conan of Cimmeria, the bronze-colored hair a Visigothic warrior-king, and the stern visage of a captain of men, none of which are useful in his career as a computer repairman, alas. He has written the DEMONSOULED series of sword-and-sorcery novels, and continues to write THE GHOSTS sequence about assassin and spy Caina Amalas, the COMPUTER BEGINNER'S GUIDE series of computer books, and numerous other works. Read more

sed & awk describes two text processing programs that are mainstays of the UNIX programmer's toolbox.sed is a "stream editor" for editing streams of text that might be too large to edit as a single file, or that might be generated on the fly as part of a larger data processing step. The most common operation done with sed is substitution, replacing one block of text with another.awk is a complete programming language. Unlike many conventional languages, awk is "data driven" -- you specify what kind of data you are interested in and the operations to be performed when that data is found. awk does many things for you, including automatically opening and closing data files, reading records, breaking the records up into fields, and counting the records. While awk provides the features of most conventional programming languages, it also includes some unconventional features, such as extended regular expression matching and associative arrays. sed & awk describes both programs in detail and includes a chapter of example sed and awk scripts.This edition covers features of sed and awk that are mandated by the POSIX standard. This most notably affects awk, where POSIX standardized a new variable, CONVFMT, and new functions, toupper() and tolower(). The CONVFMT variable specifies the conversion format to use when converting numbers to strings (awk used to use OFMT for this purpose). The toupper() and tolower() functions each take a (presumably mixed case) string argument and return a new version of the string with all letters translated to the corresponding case.In addition, this edition covers GNU sed, newly available since the first edition. It also updates the first edition coverage of Bell Labs nawk and GNU awk (gawk), covers mawk, an additional freely available implementation of awk, and briefly discusses three commercial versions of awk, MKS awk, Thompson Automation awk (tawk), and Videosoft (VSAwk). Read more

Let me be perfectly clear: ed(1) is the standard Unix text editor. If you don’t know ed, you’re not a sysadmin. You're a mere dabbler. A dilettante. Deficient. Forty years after ed’s introduction, internationally acclaimed author Michael W Lucas has finally unlocked the mysteries of ed for everyone. With Ed Mastery, you too can become a proper sysadmin. Ed Mastery will help you: • understand buffers and addresses • insert, remove, and mangle text • master file management and shell escapes • comprehend regular expressions, searches, and substitutions • create high-performance scripts for transforming files You must be at least this competent to use this computer. Read Ed Mastery today! Read more

The fascinating story of how Unix began and how it took over the world. Brian Kernighan was a member of the original group of Unix developers, the creator of several fundamental Unix programs, and the co-author of classic books like "The C Programming Language" and "The Unix Programming Environment." Read more

New Edition - October 2024Discover the World of Linux: Your Complete Beginner's Guide to Using the Most Powerful Operating SystemAre you eager to explore Linux but unsure where to start? Do you find yourself overwhelmed by the variety of Linux distributions and not know which one suits your needs best? If you're ready to learn step by step, this book is for you!Linux is not just an operating system; it’s the backbone of our digital world. Here are some compelling statistics that illustrate its significance in 2024:100% of the world’s supercomputers run on Linux.Over 95% of the top one million websites globally are powered by Linux.90% of the world’s public cloud workloads operate on Linux.Linux powers approximately 70% of all web servers globally.All leading cloud hosting providers utilize Linux.This beginner-friendly guide is designed to introduce you to Linux in a clear and accessible manner, ensuring that you can confidently navigate and utilize this powerful operating system.In this book, you will discover:The fundamentals: What is an operating system? How has Linux evolved, and what makes it unique?An overview of the architecture and file hierarchy of Linux, explained simply.The many benefits of using Linux as your operating system.A breakdown of popular Linux distributions, helping you choose the right one for your specific needs.Step-by-step instructions on installing Linux on Virtual Machines for both Windows and macOS.An exploration of Linux shells: What they are, how to access them, and basic shell scripting concepts.Techniques to make the most of powerful Linux commands.How to set up user access levels and privileges in Linux.Practical tips for utilizing Linux in network administration.Great Linux alternatives to popular Windows applications and much more!Whether you want to enhance your skill set for networking, programming, or even simple web browsing, this book provides the perfect foundation. The easy-to-follow approach ensures you can apply your newfound knowledge immediately.To help reinforce your learning, each chapter concludes with a quiz to test your understanding, with answers provided shortly after.If you’re ready to embark on your Linux journey and unlock its full potential, click Buy Now to get started today! Read more

Make OpenVMS High Availability systems and low cost Open System computers work together in complex Intranet and Internet environments.Users of Linux, UNIX and the hundreds of thousands of OpenVMS installations world-wide will find invaluable information in Linux and OpenVMS Interoperability. This book gives you access to the best resources of both Linux and OpenVMS systems by providing practical hints, tricks, and step-by-step processes for installing and interoperating both systems. If you've heard one of John Wisniewski's many presentations on the subject, you'll find that he also brings his expertise and his own brand of humor to the task of explaining these operating systems to new and experienced programmers and administrators.· Covers the capabilities, features, and advantages of both Linux and OpenVMS· Offers tested solutions to practical interoperability problems · Provides a basis for you to choose the right operating system for your needs Read more

Systems Performance, Second Edition, covers concepts, strategy, tools, and tuning for operating systems and applications, using Linux-based operating systems as the primary example. A deep understanding of these tools and techniques is critical for developers today. Implementing the strategies described in this thoroughly revised and updated edition can lead to a better end-user experience and lower costs, especially for cloud computing environments that charge by the OS instance. Systems performance expert and best-selling author Brendan Gregg summarizes relevant operating system, hardware, and application theory to quickly get professionals up to speed even if they have never analyzed performance before. Gregg then provides in-depth explanations of the latest tools and techniques, including extended BPF, and shows how to get the most out of cloud, web, and large-scale enterprise systems. Key topics covered include Hardware, kernel, and application internals, and how they performMethodologies for rapid performance analysis of complex systemsOptimizing CPU, memory, file system, disk, and networking usageSophisticated profiling and tracing with perf, Ftrace, and BPF (BCC and bpftrace)Performance challenges associated with cloud computing hypervisorsBenchmarking more effectivelyFeaturing up-to-date coverage of Linux operating systems and environments, Systems Performance, Second Edition, also addresses issues that apply to any computer system. The book will be a go-to reference for many years to come and, like the first edition, required reading at leading tech companies.   Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details. Read more

Pluggable Authentication Modules: Threat or Menace? PAM is one of the most misunderstood parts of systems administration. Many sysadmins live with authentication problems rather than risk making them worse. PAM’s very nature makes it unlike any other Unix access control system. If you have PAM misery or PAM mysteries, you need PAM Mastery! With PAM Mastery, you’ll understand: • the different versions of PAM • the intricacies of Linux-PAM and OpenPAM • how PAM policies make decisions • how to debug PAM • the most frequently seen PAM modules • Linux-PAM extended controls and substacks • time-based one-time passwords • using SSH keys for more than SSH • password quality testing • policies from CentOS, Debian, and FreeBSD • and more! Transform PAM from a headache to an ally with PAM Mastery Read more

21st-Century Data Storage ZFS, the fast, flexible, self-healing filesystem, revolutionized data storage. Leveraging ZFS changes everything about managing FreeBSD systems. With FreeBSD Mastery: ZFS, you’ll learn to: understand how your hardware affects ZFS arrange your storage for optimal performance configure datasets that match your enterprise’s needs repair and monitor storage pools expand your storage use compression to enhance performance determine if deduplication is right for your data understand how copy-on-write changes everything snapshot filesystems automatically rotate snapshots clone filesystems understand how ZFS uses and manages space do custom FreeBSD ZFS installs Whether you’re a long-term FreeBSD administrator or a new user, FreeBSD Mastery: ZFS will help you simplify storage. Master ZFS with FreeBSD Mastery: ZFS. Read more

ZFS improves everything about systems administration. Once you peek under the hood, though, ZFS’ bewildering array of knobs and tunables can overwhelm anyone. ZFS experts can make their servers zing—and now you can, too, with FreeBSD Mastery: Advanced ZFS. This small book teaches you to: • Use boot environments to make the riskiest sysadmin tasks boring • Delegate filesystem privileges to users • Containerize ZFS datasets with jails • Quickly and efficiently replicate data between machines • split layers off of mirrors • optimize ZFS block storage • handle large storage arrays • select caching strategies to improve performance • manage next-generation storage hardware • identify and remove bottlenecks • build screaming fast database storage • dive deep into pools, metaslabs, and more! Whether you manage a single small server or international datacenters, simplify your storage with FreeBSD Mastery: Advanced ZFS. Read more

Discover the true power of Linux by diving beyond the graphical interface and mastering the command line—the heart and soul of every Linux system.Linux: From Installation to Advanced System Administration offers a complete journey from your first keystrokes in the terminal to becoming proficient in Bash scripting and system management. Whether you're a beginner or want to level up your skills, this book will transform the way you use your Linux machine, turning you into a confident, command-line pro.This book isn’t just about learning commands—it’s about unlocking the deeper functionality of Linux, enabling you to take full control of your system. By the end, you’ll understand not only the "how," but the "why" behind the most important tools in Linux, giving you a rock-solid foundation that will serve you for years to come.Inside, you’ll master essential skills like:Efficiently navigating the file system and manipulating filesAdministering your system, including user management, software installation, and process controlSeamlessly chaining commands, redirecting output, and creating powerful pipelines to automate repetitive tasksEditing and managing files with Vim—the ultimate text editor for power usersWriting your own shell scripts to tackle complex tasks with easeAnalyzing and processing text files using tools like grep, sed, awk, and moreWhat sets this book apart is its focus on practical, real-world examples that you'll encounter as a Linux user or administrator. Each chapter is designed for hands-on learning, providing digestible lessons that let you apply new skills immediately.Whether you're managing a server, developing software, or just want to supercharge your desktop experience, this book is your roadmap to mastering Linux like a pro.Stop relying on the mouse and start harnessing the full potential of your Linux system today—Linux: From Installation to Advanced System Administration will show you how. Read more

The Art of UNIX Programming poses the belief that understanding the unwritten UNIX engineering tradition and mastering its design patterns will help programmers of all stripes to become better programmers. This book attempts to capture the engineering wisdom and design philosophy of the UNIX, Linux, and Open Source software development community as it has evolved over the past three decades, and as it is applied today by the most experienced programmers. Eric Raymond offers the next generation of "hackers" the unique opportunity to learn the connection between UNIX philosophy and practice through careful case studies of the very best UNIX/Linux programs. Read more

O'Reilly's bestselling book on Linux's bash shell is at it again. Now that Linux is an established player both as a server and on the desktop Learning the bash Shell has been updated and refreshed to account for all the latest changes. Indeed, this third edition serves as the most valuable guide yet to the bash shell.As any good programmer knows, the first thing users of the Linux operating system come face to face with is the shell the UNIX term for a user interface to the system. In other words, it's what lets you communicate with the computer via the keyboard and display. Mastering the bash shell might sound fairly simple but it isn't. In truth, there are many complexities that need careful explanation, which is just what Learning the bash Shell provides.If you are new to shell programming, the book provides an excellent introduction, covering everything from the most basic to the most advanced features. And if you've been writing shell scripts for years, it offers a great way to find out what the new shell offers. Learning the bash Shell is also full of practical examples of shell commands and programs that will make everyday use of Linux that much easier. With this book, programmers will learn:How to install bash as your login shellThe basics of interactive shell use, including UNIX file and directory structures, standard I/O, and background jobsCommand line editing, history substitution, and key bindingsHow to customize your shell environment without programmingThe nuts and bolts of basic shell programming, flow control structures, command-line options and typed variablesProcess handling, from job control to processes, coroutines and subshellsDebugging techniques, such as trace and verbose modesTechniques for implementing system-wide shell customization and features related to system security Read more

“As an author, editor, and publisher, I never paid much attention to the competition—except in a few cases. This is one of those cases. The UNIX System Administration Handbook is one of the few books we ever measured ourselves against.”—Tim O’Reilly, founder of O’Reilly Media“This edition is for those whose systems live in the cloud or in virtualized data centers; those whose administrative work largely takes the form of automation and configuration source code; those who collaborate closely with developers, network engineers, compliance officers, and all the other worker bees who inhabit the modern hive.”—Paul Vixie, Internet Hall of Fame-recognized innovator and founder of ISC and Farsight Security“This book is fun and functional as a desktop reference. If you use UNIX and Linux systems, you need this book in your short-reach library. It covers a bit of the systems’ history but doesn’t bloviate. It’s just straight-forward information delivered in a colorful and memorable fashion.”—Jason A. NunnelleyUNIX® and Linux® System Administration Handbook, Fifth Edition, is today’s definitive guide to installing, configuring, and maintaining any UNIX or Linux system, including systems that supply core Internet and cloud infrastructure.Updated for new distributions and cloud environments, this comprehensive guide covers best practices for every facet of system administration, including storage management, network design and administration, security, web hosting, automation, configuration management, performance analysis, virtualization, DNS, security, and the management of IT service organizations. The authors—world-class, hands-on technologists—offer indispensable new coverage of cloud platforms, the DevOps philosophy, continuous deployment, containerization, monitoring, and many other essential topics.Whatever your role in running systems and networks built on UNIX or Linux, this conversational, well-written ¿guide will improve your efficiency and help solve your knottiest problems. Read more

If you need to parse or process text data in Linux or Unix, this useful book explains how to use flex and bison to solve your problems quickly. flex & bison is the long-awaited sequel to the classic O'Reilly book, lex & yacc. In the nearly two decades since the original book was published, the flex and bison utilities have proven to be more reliable and more powerful than the original Unix tools. flex & bison covers the same core functionality vital to Linux and Unix program development, along with several important new topics. You'll find revised tutorials for novices and references for advanced users, as well as an explanation of each utility's basic usage and simple, standalone applications you can create with them. With flex & bison, you'll discover the wide range of uses these flexible tools offer.Address syntax crunching that regular expressions tools can't handleBuild compilers and interpreters, and handle a wide range of text processing functionsInterpret code, configuration files, or any other structured formatLearn key programming techniques, including abstract syntax trees and symbol tablesImplement a full SQL grammar-with complete sample codeUse new features such as pure (reentrant) lexers and parsers, powerful GLR parsers, and interfaces to C++ Read more

Programming in C will teach you how to write programs in the C programming language. Whether you’re a novice or experienced programmer, this book will provide you with a clear understanding of this language, which is the foundation for many object-oriented programming languages such as C++, Objective-C, C#, and Java.  This book teaches C by example, with complete C programs used to illustrate each new concept along the way. Stephen Kochan provides step-by-step explanations for all C functions. You will learn both the language fundamentals and good programming practices. Exercises at the end of each chapter make the book ideally suited for classroom use or for self-instruction. All the features of the C language are covered in this book, including the latest additions added with the C11 standard. Appendixes provide a detailed summary of the language and the standard C library, both organized for quick reference. “Absolutely the best book for anyone starting out programming in C. This is an excellent introductory text with frequent examples and good text.…This is the book I used to learn C–it’s a great book.”–Vinit S. Carpenter, Learn C/C++ Today     Read more