In order to thoroughly understand what makes Linux tick and why it works so well on a wide variety of systems, you need to delve deep into the heart of the kernel. The kernel handles all interactions between the CPU and the external world, and determines which programs will share processor time, in what order. It manages limited memory so well that hundreds of processes can share the system efficiently, and expertly organizes data transfers so that the CPU isn't kept waiting any longer than necessary for the relatively slow disks.

The third edition of "Understanding the Linux Kernel" takes you on a guided tour of the most significant data structures, algorithms, and programming tricks used in the kernel. Probing beyond superficial features, the authors offer valuable insights to people who want to know how things really work inside their machine. Important Intel-specific features are discussed. Relevant segments of code are dissected line by line. But the book covers more than just the functioning of the code; it explains the theoretical underpinnings of why Linux does things the way it does.

This edition of the book covers Version 2.6, which has seen significant changes to nearly every kernel subsystem, particularly in the areas of memory management and block devices. The book focuses on the following topics:

Memory management, including file buffering, process swapping, and Direct memory Access (DMA)

The Virtual Filesystem layer and the Second and Third Extended Filesystems

Process creation and scheduling

Signals, interrupts, and the essential interfaces to device drivers

Timing

Synchronization within the kernel

Interprocess Communication (IPC)

Program execution

"Understanding the Linux Kernel" will acquaint you with all the inner workings of Linux, but it's more than just an academic exercise. You'll learn what conditions bring out Linux's best performance, and you'll see how it meets the challenge of providing good system response during process scheduling, file access, and memory management in a wide variety of environments. This book will help you make the most of your Linux system.

"Not only for MacOS and Linux users, but also a great resource for Windows PS users." - Bruce Bergman Learn PowerShell in a Month of Lunches: Covers Windows, Linux, and macOS is a task-focused tutorial for administering Linux and macOS systems using Microsoft PowerShell. Adapted by PowerShell team members Travis Plunk and Tyler Leonhardt from the bestselling Learn Windows PowerShell in a Month of Lunches by community legends Don Jones and Jeffrey Hicks, it features Linux-based examples covering core language features and admin tasks. Designed for busy IT professionals, this innovative guide will take you from the basics to PowerShell proficiency through 25 tutorials you can do in your lunch break. about the technology The PowerShell scripting language and administrative shell was initially created for Windows, providing a high-quality command-line interface and awesome automation features. As part of Microsoft's ongoing strategy to support non-Windows platforms with its Azure cloud service and .NET Core framework, PowerShell now runs on Linux and macOS. Like Bash, PowerShell can execute and script nearly any aspect of Linux, so you can easily manage repetitive daily tasks, servers, Cloud resources, Continuous Integration pipelines, and more. Because PowerShell is a full-featured programming language, however, it provides capability well beyond traditional shell scripting languages, such as the ability to treat OS components as objects. about the book Learn PowerShell in a Month of Lunches: Covers Windows, Linux, and macOS is a user-friendly tutorial to managing Linux and macOS systems with PowerShell. It's based on the bestselling Learn Windows PowerShell in a Month of Lunches, which has introduced PowerShell to nearly 100,000 readers. You'll learn how PowerShell shapes up to Bash or Python scripting as you write and run simple scripts that automate boring daily tasks. As you progress through the book, you'll use PowerShell to write Continuous Integration Pipelines and manage cloud-based servers. Just set aside one hour a day for a month, and you'll be automating tasks faster than you ever thought possible! what's inside - Why you should use PowerShell on Linux and macOS - Background jobs and automation techniques - Simple scripting to automate repetitive daily tasks - Common syntax and commands cheat sheet - Each lesson takes you an hour or less about the reader For IT professionals comfortable administering Windows or Linux. No previous experience with PowerShell or Bash required. about the author Travis Plunk has been a Software Engineer on various PowerShell teams since 2013, and at Microsoft since 1999. He was involved in open sourcing PowerShell and has worked on the project full time since shortly after the project was announced. James Petty is a Microsoft MVP, and the CEO and Executive Director for the DevOps Collective and PowerShell.org. Tyler Leonhardt has been a Software Engineer on the PowerShell team since 2017, and at Microsoft since 2016. He is a core maintainer of the PowerShell extension for Visual Studio Code. Learn Windows PowerShell in a Month of Lunches was written by PowerShell community legends Don Jones and Jeffrey Hicks, who have years of experience as successful PowerShell trainers.

In a nutshell, this updated UNIX classic covers everything you'll ever need for threads, TCP/IP and RPC programming-with reusable code examples that explain syntax along the way. Robbins and Robbins explain the essentials of UNIX programming, concentrating on communication, concurrency, and multithreading techniques and why, when, and how to use them. They also show how to design complex software to get the best from the UNIX operating system. Using short code snippets to illustrate how to use system calls, they also include a number of hands-on "projects" that very quickly help readers expand their skill levels. The book includes chapters on files, signals, semaphores, POSIX threads, client-server communication, and remote procedure calls. There are also short examples, working code, and simplified libraries for use in network communication applications featured throughout the book. The updated Second Edition includes all-new chapters on the Web and multicast and a completely revised and updated RPC chapter.

This book is the ultimate reference for both beginners and power users to PC-BSDthe free, easy-to-use operating system based on FreeBSD. Existing power users will learn how to look under the hood and contribute to the global PC-BSD community. PC-BSD is turning into a hassle-free alternative to Linux on the desktop.Enjoy secure, virus-free computing Quickly become a power user What you'll learn How to completely customize your desktop to suit your personality and quickly access your favorite applications How to find and install quality, no-cost software How to keep your system secure, virus-free, and up to date How to perform common tasks such as playing music and video, sharing files, and gaming How to integrate the PC-BSD desktop into your network How to become part of the PC-BSD community Who this book is for

You don't have to be a Unix user to enjoy the PC-BSD operating system. Even if you're fairly new to computers, this book will quickly get you started using and enjoying PC-BSD. Existing power users will discover new usage tricks and learn how to advance their PC-BSD skills. Table of Contents Introducing PC-BSD Installing PC-BSD Customizing the Desktop Getting Around Performing Common Tasks User System Settings Administrative System Settings Push Button Installer System FreeBSD Packages FreeBSD Ports Getting Help Getting Involved Advanced Tasks Becoming a Developer

The latest edition of this best-selling favorite is loaded with vital information on Linux, Darwin, and BSD. Unix Power Tools 3rd Edition now offers more coverage of bash, zsh, and other new shells, along with discussions about modern utilities and applications. Several sections focus on security and Internet access. There is a new chapter on access to Unix from Windows, and expanded coverage of software installation and packaging, as well as basic information on Perl and Python.

The Cathedral & the Bazaar is a must for anyone who cares about the future of the computer industry or the dynamics of the information economy. This revised and expanded paperback edition includes new material on open source developments in 1999 and 2000. Raymond's clear and effective writing style accurately describing the benefits of open source software has been key to its success.

"There's an incredible amount of depth and thinking in the practices described here, and it's impressive to see it all in one place." -Win Treese, coauthor of Designing Systems for Internet Commerce The Practice of Cloud System Administration, Volume 2, focuses on "distributed" or "cloud" computing and brings a DevOps/SRE sensibility to the practice of system administration. Unsatisfied with books that cover either design or operations in isolation, the authors created this authoritative reference centered on a comprehensive approach. Case studies and examples from Google, Etsy, Twitter, Facebook, Netflix, Amazon, and other industry giants are explained in practical ways that are useful to all enterprises. The new companion to the best-selling first volume, The Practice of System and Network Administration, Second Edition, this guide offers expert coverage of the following and many other crucial topics: Designing and building modern web and distributed systems Fundamentals of large system design Understand the new software engineering implications of cloud administration Make systems that are resilient to failure and grow and scale dynamically Implement DevOps principles and cultural changes IaaS/PaaS/SaaS and virtual platform selection Operating and running systems using the latest DevOps/SRE strategies Upgrade production systems with zero down-time What and how to automate; how to decide what not to automate On-call best practices that improve uptime Why distributed systems require fundamentally different system administration techniques Identify and resolve resiliency problems before they surprise you Assessing and evaluating your team's operational effectiveness Manage the scientific process of continuous improvement A forty-page, pain-free assessment system you can start using today

Learn how to attack and defend the world s most popular web server platform Linux Server Security: Hack and Defend presents a detailed guide for experienced admins, aspiring hackers and other IT professionals seeking a more advanced understanding of Linux security. Written by a 20-year veteran of Linux server deployment this book provides the insight of experience along with highly practical instruction. The topics range from the theory of past, current, and future attacks, to the mitigation of a variety of online attacks, all the way to empowering you to perform numerous malicious attacks yourself (in the hope that you will learn how to defend against them). By increasing your understanding of a hacker s tools and mindset you're less likely to be confronted by the all-too-common reality faced by many admins these days: someone else has control of your systems. * Master hacking tools and launch sophisticated attacks: perform SQL injections, deploy multiple server exploits and crack complex passwords. * Defend systems and networks: make your servers invisible, be confident of your security with penetration testing and repel unwelcome attackers. * Increase your background knowledge of attacks on systems and networks and improve all-important practical skills required to secure any Linux server. The techniques presented apply to almost all Linux distributions including the many Debian and Red Hat derivatives and some other Unix-type systems. Further your career with this intriguing, deeply insightful, must-have technical book. Diverse, broadly-applicable and hands-on practical, Linux Server Security: Hack and Defend is an essential resource which will sit proudly on any techie's bookshelf.

This soup-to-nuts collection of recipes covers everything you need to know to perform your job as a Linux network administrator, whether you're new to the job or have years of experience. With "Linux Networking Cookbook", you'll dive straight into the gnarly hands-on work of building and maintaining a computer network. Running a network doesn't mean you have all the answers. Networking is a complex subject with reams of reference material that's difficult to keep straight, much less remember. If you want a book that lays out the steps for specific tasks, that clearly explains the commands and configurations, and does not tax your patience with endless ramblings and meanderings into theory and obscure RFCs, this is the book for you.You will find recipes for: building a gateway, firewall, and wireless access point on a Linux network; building a VoIP server with Asterisk; secure remote administration with SSH; building secure VPNs with OpenVPN, and a Linux PPTP VPN server; single sign-on with Samba for mixed Linux/Windows LANs; centralized network directory with OpenLDAP; network monitoring with Nagios or MRTG; getting acquainted with IPv6; setting up hands-free networks installations of new systems; Linux system administration via serial console, and a lot more. Each recipe includes a clear, hands-on solution with tested code, plus a discussion on why it works. When you need to solve a network problem without delay, and don't have the time or patience to comb through reference books or the Web for answers, "Linux Networking Cookbook" gives you exactly what you need.

This handy cookbook teaches new-to-intermediate Linux users the essential skills necessary to manage a Linux system, using both graphical and command-line tools. Whether you run Linux in embedded, desktop, server, or cloud or virtual environments, the fundamental skills are the same. This book aims to get you up and running quickly, with copy-paste examples. Carla Schroder provides recipes that cover specific problems, with discussions that explain how each recipe works, as well as references for additional study. You'll learn how to: Use systemd, the new comprehensive service manager Build simple or complex firewalls with firewalld Set up secure network connections for Linux systems and mobile devices Rescue nonbooting systems Reset lost passwords on Linux and Windows Use dnsmasq to simplify managing your LAN name services Manage users and groups and control access to files Probe your computer hardware and monitor hardware health Manage the GRUB bootloader and multiboot Linux and Windows Keep accurate time across your network with the newest tools Build an internet router/firewall on Raspberry Pi Manage filesystems and partitioning

With more than 60 practical and creative hacks, this book helps you turn Raspberry Pi into the centerpiece of some cool electronics projects. Want to create a controller for a camera or a robot? Set up Linux distributions for media centers or PBX phone systems? That's just the beginning of what you'll find inside "Raspberry Pi Hacks."

If you're looking to build either a software or hardware project with more computing power than Arduino alone can provide, Raspberry Pi is just the ticket. And the hacks in this book will give you lots of great ideas.Use configuration hacks to get more out of your PiBuild your own web server or remote print serverTake the Pi outdoors to monitor your garden or control holiday lightsConnect with SETI or construct an awesome Halloween costumeHack the Pi's Linux OS to support more complex projectsDecode audio/video formats or make your own music playerAchieve a low-weight payload for aerial photographyBuild a Pi computer cluster or a solar-powered lab

Completely updated for this exciting third edition, Beginning Ubuntu for Windows and Mac Users will help you start your journey into Free and Open Source Software with Ubuntu 22.04.1 LTS with GNOME 42. This book is a friendly guide to installing and running Ubuntu for people who are already efficient and happy with Windows or macOS computers. It teachers new Ubuntu users how to navigate their new operating system, perform basic tasks and suggests specific applications to handle routine tasks. You'll start by installing Ubuntu and its related "flavors" (Kubuntu, Ubuntu MATE, etc.) and how they differ from each other. The rest of the book breaks down application suggestions by broad categories to fill in gaps in the default installed system, or suggest fun things that the reader might not have even thought of. The command line is handled after you are comfortable with the system and ready for something interesting but different. It's presented as a powerful interface that can either be approached casually as a unique method of interacting with the computer, as an occasional tool to use, or as a fun way to get in touch with an early way of using a computer. A brief look at "power user" topics gives advice on managing running processes, installing alternate desktop software, using virtual desktops and creating virtual machines. It's a great way to round off the book with starting points for advanced topics that are more specialty topics. An appendix describes the Ubuntu release schedule, naming, and timing. The book is designed to function as a "travel guide" to Ubuntu, offering both a scenic tour through some of the great software in Ubuntu in a practical "here's what you can do with this" style as well as a comprehensive reference guide that the reader can return to over and over to learn how to accomplish specific tasks. What You'll Learn Understand the advantages of Ubuntu and its variants-Kubuntu and Xubuntu Install Ubuntu on its own or alongside your computer's existing operating system Search Ubuntu's catalog of thousands of applications Work with files and disks that were created with Windows and OS X Run simple, interesting tasks and games using the command line Customize Ubuntu in powerful ways and get work done with virtual machines Who This Book Is For Beginning to intermediate computer users with Windows 7 or OS X or later experience

Learn, develop and hone your Linux and DevOps skills by building a lab for learning, testing and exploring the latest Linux and open-source technologies. This book helps Linux users and others to master modern DevOps practices using a wide range of software and tools. Having a home or work-based Linux lab is indispensable to anyone looking to experiment with the ever-evolving landscape of new software and DevOps. With open-source tools and readily available hardware, you will end up with a lab you can use to try virtually any modern software, including Chef, Docker, Kubernetes and stalwarts like DNS, Dovecot, and Postfix for email. You'll set up pipelines for software deployment and focus on discrete projects that help you learn through doing. In the end, you'll acquire the skills needed to become better informed, more marketable engineers and developers, and better able to take on a wide array of software projects with confidence. Practical Linux DevOps is the perfect companion for those who want to learn how to build systems with utility and learn about modern hardware and software practices. What You'll Learn Set up a Linux-based virtualization environment and workstation Create a lab network with a fully qualified domain Build web-based applications with NGINX and LAMP Use version-control tools like Git Automate deployments and configurations Think like a modern DevOps engineer Who This Book Is For New and modestly experienced users with basic understanding of a basic understanding of Windows or Linux command line, as well as would-be and current DevOps engineers, and full-stack and other software developers

Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. Primarily Written for those who want to earn the Sun Certified System Administrator (SCSA) certification for Solaris 10, this guide presents full coverage of the official objectives for both the required exams: CX-310-200 and CX-310-202. In spite of the laser sharp focus on the exam objectives, this is not a cram style book. Written in a classroom-based teaching style, this book presents material in a sequential fashion: topics and chapters build upon the previously covered topics and chapters. There is no hopping from topic to topic. An introductory chapter for beginners and a cohesive, concise, yet comprehensive presentation of the material makes it a self contained book that requires no prior experience in Solaris or UNIX. Even after passing the exam, you will find yourself coming back to use this book as an on-the-job reference.Full coverage of exam topics includes: Basic and advanced Solaris 10 installation Managing file systems and core dumps Performing user and security administration Managing network printers and system processes Performing system backups and restores and managing storage volumes Managing naming services Managing role based access control and system messaging Understanding fundamentals of TCP/IP networking and managing network services The book features complete details on all exam objectives, 250+ practice questions, step-by-step exercises, on-the-job elements, a two-minute drill at the end of each chapter that reviews the key points in the chapter, and chapter self-tests. The CD contains MasterExam practice exam software with all new questions, a Searchable electronic book, and a second practice exam (with free online registration).

Everything you need to know about Linux is in this book. Written by Stephen Figgins, Ellen Siever, Robert Love, and Arnold Robbins -- people with years of active participation in the Linux community -- Linux in a Nutshell, Sixth Edition, thoroughly covers programming tools, system and network administration tools, the shell, editors, and LILO and GRUB boot loaders. This updated edition offers a tighter focus on Linux system essentials, as well as more coverage of new capabilities such as virtualization, wireless network management, and revision control with git. It also highlights the most important options for using the vast number of Linux commands. You'll find many helpful new tips and techniques in this reference, whether you're new to this operating system or have been using it for years. * Get the Linux commands for system administration and network management * Use hundreds of the most important shell commands available on Linux * Understand the Bash shell command-line interpreter * Search and process text with regular expressions * Manage your servers via virtualization with Xen and VMware * Use the Emacs text editor and development environment, as well as the vi, ex, and vim text-manipulation tools * Process text files with the sed editor and the gawk programming language * Manage source code with Subversion and git

Become productive with seamless interoperability between Windows and the Linux subsystem, and understand the problems that Windows Subsystem for Linux (WSL) solves. Microsoft has pushed the boundaries of open source research with WSL and you don't want to miss this ride. You will learn keywords, definitions, new features, setup, and use cases around WSL, starting from downloading to setup to interoperability between Windows and Linux subsystems. You will understand the architecture of WSL and all the new features in WSL 2. This book includes wonderful use cases, including a dedicated chapter to how to start programming and web development on WSL, and the ability to use containerization solutions like Docker and Kubernetes. WSL is a great solution to work natively in a Linux environment from your Windows 10 machines. Modern applications demand integration of cross-platform tools, services and technologies. WSL makes life for developers and system administrators easy because it allows Linux applications to run on Windows without worrying about installing a Linux distribution on a traditional Virtual Machine. It is remarkable product with powerful functionality - get started with it using this book today. What You'll Learn Review the workings and internals of WSL and WSL2 Run Linux-based applications natively on Windows Establish your development environment in WSL Build mixed experiences (Windows-Linux) Set up and manage WSL and supported distribution packages. Who This Book Is For Programmers, web developers and system administrators working on Windows and Linux environments who want to bridge the gap between operating systems by running a Linux as a subsystem on Windows to boost their overall productivity, performance and delivery.

Docker containers offer simpler, faster, and more robust methods for developing, distributing, and running software than previously available. With this hands-on guide, you'll learn why containers are so important, what you'll gain by adopting Docker, and how to make it part of your development process. Ideal for developers, operations engineers, and system administrators-especially those keen to embrace a DevOps approach-Using Docker will take you from Docker and container basics to running dozens of containers on a multi-host system with networking and scheduling. The core of the book walks you through the steps needed to develop, test, and deploy a web application with Docker. Get started with Docker by building and deploying a simple web application Use Continuous Deployment techniques to push your application to production multiple times a day Learn various options and techniques for logging and monitoring multiple containers Examine networking and service discovery: how do containers find each other and how do you connect them? Orchestrate and cluster containers to address load-balancing, scaling, failover, and scheduling Secure your system by following the principles of defense-in-depth and least privilege

Think your Mac is powerful now? This practical guide shows you how to get much more from your system by tapping into Unix, the robust operating system concealed beneath OS X's beautiful user interface. OS X puts more than a thousand Unix commands at your fingertips-for finding and managing files, remotely accessing your Mac from other computers, and using freely downloadable open source applications. If you're an experienced Mac user, this updated edition teaches you all the basic commands you need to get started with Unix. You'll soon learn how to gain real control over your system. Get your Mac to do exactly what you want, when you want Make changes to your Mac's filesystem and directories Use Unix's find, locate, and grep commands to locate files containing specific information Create unique "super commands" to perform tasks that you specify Run multiple Unix programs and processes at the same time Access remote servers and interact with remote filesystems Install the X Window system and learn the best X11 applications Take advantage of command-line features that let you shorten repetitive tasks

If you're new to Unix, this concise book will tell you just what you need to get started and no more. This fifth edition is the most effective introduction to Unix in print, covering Internet usage for email, file transfers, and web browsing. It's an ideal primer for Mac and PC users who need to know a little about Unix on the systems they visit.

Discover how to leverage modern Unix even if you've never worked with Unix before. This book presents everything in conceptual terms that you can understand, rather than tips to be committed raw to memory. You will learn everyday tasks ranging from basic system administration-partitioning and mounting filesystems, software installation, network configuration, working from the command line) - to Bourne shell scripting, using graphical applications, as well as fanciful things such as emulation layers for Windows and Linux and virtualization with VirtualBox. It's now 50 years since the creation of Unix but it is still growing. As Unix now moves to everyone's OS (open-source FreeBSD/Linux), it is the perfect time to start your journey with Beginning Modern Unix as your guide. What You'll Learn Live comfortably in a modern Unix environment, both on the command-line and in the graphical world. Choose the right hardware for Unix Work with Unix in real world settings Develop Unix applications Review advanced techniques in Shell scripting Who This Book Is For Everyone who uses a computer - those who intend to migrate to Unix as well as those who are worried about migrating to Unix, perhaps fearing it is a pure command-line or 'difficult' world.

If you think "Modern" and "C" don't belong in the same sentence, think again. The C standards committee actively reviews and extends the language, with updated published C standards as recently as 2018. In Modern C, author Jens Gustedt teaches you the skills and features you need to write relevant programs in this tried-and-true language, including Linux and Windows, device drivers, web servers and browsers, smartphones, and much more! Modern C teaches you to take your C programming skills to new heights, whether you're just starting out with C or have more extensive experience. Organized by level, this comprehensive guide lets you jump in where it suits you best while still reaping the maximum benefits. Key Features Fundamentals of C programming Operators and functions Performance techniques C library functions For more than four decades, C has proved its usefulness and staying power for everything from massive systems for mainframes, satellites, and internet browsers to tiny embedded systems in vending machines, credit card readers, and alarm clocks. Today you'll find lightning-fast, elegant C programs running in smartphone kernels, databases, 3D movies, video games, and scores of other modern applications. For programmers comfortable writing simple programs in a language like Java, Python, Ruby, C#, C++, or C. Jens Gustedt has been a senior scientist at the French National Institute for Computer Science and Control (INRIA) since 1998, working in areas including algorithms, scientific experimentation, models for coarse-grained parallelism, and distributed locking. Currently, he's conducting the Modular C project, which has given rise to libraries such as arbogast and EiLck.

Choosen by BookAuthority as one of BookAuthority's Best Linux Mint Books of All Time Linux: The Textbook, Second Edition provides comprehensive coverage of the contemporary use of the Linux operating system for every level of student or practitioner, from beginners to advanced users. The text clearly illustrates system-specific commands and features using Debian-family Debian, Ubuntu, and Linux Mint, and RHEL-family CentOS, and stresses universal commands and features that are critical to all Linux distributions. The second edition of the book includes extensive updates and new chapters on system administration for desktop, stand-alone PCs, and server-class computers; API for system programming, including thread programming with pthreads; virtualization methodologies; and an extensive tutorial on systemd service management. Brand new online content on the CRC Press website includes an instructor's workbook, test bank, and In-Chapter exercise solutions, as well as full downloadable chapters on Python Version 3.5 programming, ZFS, TC shell programming, advanced system programming, and more. An author-hosted GitHub website also features updates, further references, and errata. Features New or updated coverage of file system, sorting, regular expressions, directory and file searching, file compression and encryption, shell scripting, system programming, client-server-based network programming, thread programming with pthreads, and system administration Extensive in-text pedagogy, including chapter objectives, student projects, and basic and advanced student exercises for every chapter Expansive electronic downloads offer advanced content on Python, ZFS, TC shell scripting, advanced system programming, internetworking with Linux TCP/IP, and many more topics, all featured on the CRC Press website Downloadable test bank, workbook, and solutions available for instructors on the CRC Press website Author-maintained GitHub repository provides other resources, such as live links to further references, updates, and errata