This new edition, covering version 5 of FreeBSD, is now available through O'Reilly Community Press. It is an eminently practical guidebook that explains not only how to get a computer up and running with the FreeBSD operating system, but also how to turn it into a highly functional and secure server that can host large numbers of users and disks, support remote access, and provide web service, mail service, and other key parts of the Internet infrastructure.

This new edition of Practical Unix & Internet Security provides detailed coverage of today's increasingly important security and networking issues. Focusing on the four most popular Unix variants today--Solaris, Mac OS X, Linux, and FreeBSD--this book contains new information on PAM (Pluggable Authentication Modules), LDAP, SMB/Samba, anti-theft technologies, embedded systems, wireless and laptop issues, forensics, intrusion detection, chroot jails, telephone scanners and firewalls, virtual and cryptographic filesystems, WebNFS, kernel security levels, outsourcing, legal issues, new Internet protocols and cryptographic algorithms, and much more.

Linux Server Hacks is a collection of 100 industrial-strength hacks, providing tips and tools that solve practical problems for Linux system administrators. Every hack can be read in just a few minutes but will save hours of searching for the right answer. Some of the hacks are subtle, many of them are non-obvious, and all of them demonstrate the power and flexibility of a Linux system. You'll find hacks devoted to tuning the Linux kernel to make your system run more efficiently, as well as using CVS or RCS to track the revision to system files. You'll learn alternative ways to do backups, how to use system monitoring tools to track system performance and a variety of secure networking solutions. Linux Server Hacks also helps you manage large-scale Web installations running Apache, MySQL, and other open source tools that are typically part of a Linux system.

You may be contemplating your first Linux installation. Or you may have been using Linux for years and need to know more about adding a network printer or setting up an FTP server. "Running Linux," now in its fifth edition, is the book you'll want on hand in either case. Widely recognized in the Linux community as the ultimate getting-started and problem-solving book, it answers the questions and tackles the configuration issues that frequently plague users, but are seldom addressed in other books.

This fifth edition of "Running Linux" is greatly expanded, reflecting the maturity of the operating system and the teeming wealth of software available for it. Hot consumer topics such

as audio and video playback applications, groupware functionality, and spam filtering are covered, along with the basics in configuration and management that always have made the book popular.

"Running Linux" covers basic communications such as mail, web surfing, and instant messaging, but also delves into the subtleties of network configuration--including dial-up, ADSL, and cable modems--in case you need to set up your network manually. The book can

make you proficient on office suites and personal productivity applications--and also tells you what programming tools are available if you're interested in contributing to these applications.

Other new topics in the fifth edition include encrypted email and filesystems, advanced shell techniques, and remote login applications. Classic discussions on booting, package management, kernel recompilation, and X configuration have also been updated.

The authors of "Running Linux" have anticipated problem areas, selected stable andpopular solutions, and provided clear instructions to ensure that you'll have a satisfying experience using Linux. The discussion is direct and complete enough to guide novice users, while still providing the additional information experienced users will need to progress in their mastery of Linux.

Whether you're using Linux on a home workstation or maintaining a network server, "Running Linux" will provide expert advice just when you need it.

This guide covers all aspects of deploying Solaris as an enterprise-level network operating system, with a focus on e-commerce. Written for experienced network administrators who want an objective guide to networking with Solaris, the book covers installation on the Intel and Sparc platforms, and instructs you how to setup Solaris as a file server, application server, and database server.

* 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

In Linux Unwired, you'll learn the basics of wireless computing, from the reasons why you'd want to go wireless in the first place, to setting up your wireless network or accessing wireless data services on the road. The book provides a complete introduction to all the wireless technologies supported by Linux. You'll learn how to install and configure a variety of wireless technologies to fit different scenarios, including an office or home network and for use on the road. You'll also learn how to get Wi-Fi running on a laptop, how to use Linux to create your own access point, and how to deal with cellular networks, Bluetooth, and Infrared. Other topics covered in the book include: Connecting to wireless hotspots; Cellular data plans you can use with Linux; Wireless security, including WPA and 802.1x; Finding and mapping Wi-Fi networks with kismet and gpsd; Connecting Linux to your Palm or Pocket PC; Sending text messages and faxes from Linux through your cellular phone Linux Unwired is a one-stop wireless information source for on-the-go Linux users.Whether you're considering Wi-Fi as a supplement or alternative to cable and DSL, using Bluetooth to network devices in your home or office,or want to use cellular data plans for access to data nearly everywhere, this book will show you the full-spectrum view of wireless capabilities of Linux, and how to take advantage of them.

DESCRIPTION The idea behind Docker, a free an open source program, is simple. Create a tiny virtual environment, called a container, for an application that includes only its particular set of dependencies. The Docker engine accounts for, manages, and builds these containers through functionality provided by the host operating system. Software running inside containers share the Linux OS and other resources, making their footprints radically smaller, and the containerized applications easy to install, manage, and remove. Applications can be packaged without worrying about environment-specific deployment concerns, and the operations team gets cleaner, more efficient systems across the board. Docker in Action starts with a clear explanation of the Docker model of virtualization and shows how to create, deploy, and manage applications hosted in Docker containers. It offers specific techniques for testing and distributing applications via Docker Hub and other registries. It shows how to take advantage of the Linux OS features that Docker uses to run programs securely, and how to manage shared resources. Using carefully-designed examples, the book guides readers on orchestrating containers and applications from installation to removal. Along the way, it teaches techniques for using Docker on systems ranging from personal dev-and-test machine to full-scale cloud deployments. KEY SELLING POINTS Explains the "why" and "how" of Docker Simplify software installation Addresses many of the everyday software problems faced by developers AUDIENCE Readers need a working knowledge of installing and running software on the Linux OS. No prior experience with Docker or other virtualization technologies is required. ABOUT THE TECHNOLOGY Docker provides software logistics. It uses "container" abstraction to hide complex tooling for packaging software, and running software in virtualized environments without overhead of a full virtual machine. Docker and the container abstraction are driving a change in the way people write, test, deploy, and distribute software.

Linux is a powerful open-source operating system that has been around for many years and is widely used for running servers and websites. But most students and Makers encounter it for the first time when they are working on projects with their Raspberry Pi or similar single-board computers (SBCs) such as BeagleBone Black or Intel Galileo. Linux for Makers is the first book that explains the Linux operating system specifically for Makers, as opposed to programmers and administrators. By gaining a deeper understanding of Linux, Makers can add another useful tool to their kit that will help them build their projects more easily. Written with the Maker in mind, this book will focus mostly on Rasbian running on the Raspberry Pi as it is the most prolific in the ecosystem today. However most of the topics covered will apply broadly to other Linux distributions and will be called out when they may differ. Many times users cut and paste from a website tutorial into the Linux command line without understanding what they are actually doing only to be frustrated when they want to modify or tweak something to suit their needs. Also, many Makers shy away from using the Raspberry Pi or similar board because they feel Linux is too foreign and they think using a command line will be more difficult than using a GUI. This book aims to overcome those fears and provide a foundation for further learning and exploration. To that end, this book will focus on the basic principles that a Maker would need to know as opposed to other resources that go into detail that is not particularly relevant to building projects.

FreeBSD and OpenBSD are increasingly gaining traction in educational institutions, non-profits, and corporations worldwide because they provide significant security advantages over Linux. Although a lot can be said for the robustness, clean organization, and stability of the BSD operating systems, security is one of the main reasons system administrators use these two platforms.

There are plenty of books to help you get a FreeBSD or OpenBSD system off the ground, and all of them touch on security to some extent, usually dedicating a chapter to the subject. But, as security is commonly named as the key concern for today's system administrators, a single chapter on the subject can't provide the depth of information you need to keep your systems secure.

FreeBSD and OpenBSD are rife with security "building blocks" that you can put to use, and "Mastering FreeBSD and OpenBSD Security" shows you how. Both operating systems have kernel options and filesystem features that go well beyond traditional Unix permissions and controls. This power and flexibility is valuable, but the colossal range of possibilities need to be tackled one step at a time. This book walks you through the installation of a hardened operating system, the installation and configuration of critical services, and ongoing maintenance of your FreeBSD and OpenBSD systems.

Using an application-specific approach that builds on your existing knowledge, the book provides sound technical information on FreeBSD and Open-BSD security with plenty of real-world examples to help you configure and deploy a secure system. By imparting a solid technical foundation as well as practical know-how, it enables administrators to push their server's security to the next level. Even administrators in other environments--like Linux and Solaris--can find useful paradigms to emulate.

Written by security professionals with two decades of operating system experience, "Mastering FreeBSD and OpenBSD Security" features broad and deep explanations of how how to secure your most critical systems. Where other books on BSD systems help you achieve functionality, this book will help you more thoroughly secure your deployments.

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 lik

Gain the skills and knowledge to manage your core network services on Red Hat Enterprise Linux with help of self-tests and practical use cases Key Features * Get the EX358 certification with ease while preparing for real-life challenges * Learn everything you need to know about Linux system administration and automation using Ansible 2.11 * Use practical use cases and exam-focused questions to prepare for the exam Book Description If you're ready to take the next step in your cybersecurity career with the EX358, then this book is for you. Complete with all the knowledge and skills you need to build applications on the Red Hat Linux 8 (RHEL OS 8) platform, this book will help you prepare for the exam and beyond. Red Hat Certified Specialist in Service Management and Automation will help you build a solid foundation of knowledge and confidence with the most up-to-date exam requirements and practice questions. As you progress through the book, you'll work through the different technical proficiencies needed to fully administer a Red Hat Enterprise Linux 8 system. This will include direct configuration of things such as SMB shares, networking, and a deep dive to understand t the configuration of essential components like firewall, SELinux, and iSCSI. You'll also learn how to automate all of these tasks using Ansible Automation in order to alleviate the burden of having to complete all of these tasks by hand. By the end of this book, you'll have covered everything you need to pass the Red Hat EX358 certification exams and have a handy, on-the-job desktop reference guide. What you will learn * Confidently take and pass the Red Hat EX358 certification exam * Learn how to use Ansible Core 2.11+ * Gain deeper knowledge of the Red Hat Linux Networking with DNS, DHCP, and IP addressing * Create your own link and master the networking domain through link aggregation creation * Set up printers and email services through Linux servers * Get up and running with MariaDB SQL databases * Learn how to create and control web traffic Who This Book Is For This book is for anyone wanting to advance their career by adding this essential Red Hat certificate to their resume. It will be particularly useful for system administrators responsible for managing large enterprise environments, network services and Red Hat Certified Engineers interested in becoming a Red Hat Certified Architect (RHCA). There are a few prerequisites before you can get started with this book: a solid grasp on Red Hat Enterprise Linux and Ansible Automation, as well as the command line with Linux systems administration.

Full coverage of the latest LPI-level 2 exams, with bonus online test bank LPIC-2 is the one-stop preparation resource for the Linux Professional Institute's Advanced Level certification exam. With 100 percent coverage of all exam objectives, this book provides clear and concise coverage of the Linux administration topics you'll need to know for exams 201 and 202. Practical examples highlight the real-world applications of important concepts, and together, the author team provides insights based on almost fifty years in the IT industry. This brand new second edition has been completely revamped to align with the latest versions of the exams, with authoritative coverage of the Linux kernel, system startup, advanced storage, network configuration, system maintenance, web services, security, troubleshooting, and more. You also get access to online learning tools including electronic flashcards, chapter tests, practice exams, and a glossary of critical terms to help you solidify your understanding of upper-level Linux administration topics. The LPI-level 2 certification confirms your advanced Linux skill set, and the demand for qualified professionals continues to grow. This book gives you the conceptual guidance and hands-on practice you need to pass the exam with flying colors. * Understand all of the material for both LPIC-2 exams * Gain insight into real-world applications * Test your knowledge with chapter tests and practice exams * Access online study aids for more thorough preparation Organizations are flocking to the open-source Linux as an excellent, low-cost, secure alternative to expensive operating systems like Microsoft Windows. As the Linux market share continues to climb, organizations are scrambling to find network and server administrators with expert Linux knowledge and highly practical skills. The LPI-level 2 certification makes you the professional they need, and LPIC-2 is your ideal guide to getting there.

The KDE and Gnome desktops have developed into mature operating environments. These technologies not only act as interfaces between the user, the powerful Linux kernel and GNU operating system, but they do so in a fun and intuitive way. Many users are content with the tools and facilities included with these desktops, but--for those who are ready to probe a little deeper--much more functionality can be found by going under the hood.

With hacks that any user can follow, "Linux Desktop Hacks" demonstrates how easy it is to modify Linux to suit your desires. The book is packed with tips on customizing and improving the interface, boosting performance, administering your desktop, and generally making the most out of what X, KDE, Gnome, and the console have to offer.

From the practical to the whimsical, and some things you never thought of trying, the hacks in the book include the following, and more:

Kill and Resurrect the Master Boot Record

Jazz Up Your Debian System Boot

Energize Your Console with Macro Music Magic

Konquer Remote Systems Without Passwords

Run KDE on the Bleeding Edge

View Microsoft Word Documents in a Terminal

Read Yahoo! Mail from Any Email Client

Motion Capture and Video Conferencing Fun

Automate Your Life with cron

Protect Yourself from Windows Applications

Make an Internet Connection Using Bluetooth and a Mobile Phone

Print to Unsupported Printers

Accelerate Your Gaming

If you're yearning for information to make the Linux desktop easier, more powerful, and more fun, "Linux Desktop Hacks" is just the ticket.

The open source saga has many fascinating chapters. It is partly the story of Linus Torvalds, the master hacker who would become chief architect of the Linux operating system. It is also the story of thousands of devoted programmers around the world who spontaneously worked in tandem to complete the race to shape Linux into the ultimate killer app. Rebel Code traces the remarkable roots of this unplanned revolution. It echoes the twists and turns of Linux's improbable development, as it grew through an almost biological process of accretion and finally took its place at the heart of a jigsaw puzzle that would become the centerpiece of open source. With unprecedented access to the principal players, Moody has written a powerful tale of individual innovation versus big business. Rebel Code provides a from-the-trenches perspective and looks ahead to how open source is challenging long-held conceptions of technology, commerce, and culture.

Welcome to the cloud for users, where the speed of Ubuntu and the ease of cloud applications unite. You can now speed up your netbook, connect to the world using 3G modems, or make calls using Skype with Ubuntu. You can even change your desktop altogether without having to worry about netbook screen real estate. Now, you will never have to worry about the lack of documentation for your netbook again.Install and configure Ubuntu on a netbook. Connect and secure Ubuntu on your netbook. Tune Ubuntu and cloud applications to run on your netbook. What you'll learn Install Ubuntu on a netbookConnect to the Internet via 3G modemsTrick out Ubuntu with new applicationsWork with multimediaOptimize Ubuntu for your netbook Who this book is for

Every netbook user who is using Linux on netbooks or wants to replace XP with Linux. Table of Contents Installing Ubuntu on a Netbook Starting to Use Ubuntu Netbook Remix Getting Connected Netbook Online Creating Office Files Working with Media Optimizing Netbook Settings Netbook Management

You know that Ubuntu software costs nothing. Now you want the PC system that costs as little as possible and runs Ubuntu and OS applications without complaints and calls to tech support.

So you spent your hardearned dollars on the hardware only, and have your own optimized Ubuntu PC. This is the book that will show you how to get what you need without wreaking havoc on your finances. Put together the parts to make a great work computer for little cost.

Packed with the practical, handson guidance and technical knowhow that you've come to expect from Apress, Ubuntu on a Dime takes you on a tour of the very best lowcost hardware, while only using zerocost software in each of the many categories that matter to the typical PC user.

You'll learn how to find the best and cheapest hardware, and how to put it together to make a working PC. Learn to edit photos on the Internet without having to install any software at all. Find out where to get a free office suite for word processing and spreadsheet work. Whatever your need, James Kelly, bestselling technology author, guides you through the exciting and often confusing world of zerocost computing.

This bookTakes you stepbystep through a PC build Tells you what you need to install to have a fantastic work computer without spending a dime Saves you money by showing you how to meet your computing needs Saves you time by pointing you directly to the best free software Saves you work by illustrating the most commonly performed tasks with each zerocost software Gives you choices and the ability to make your own decisions for your own needs and requirements

Before you go buy that $900 dollar computer and that $400 office suiteor worse, before you borrow it from workstop Let this inexpensive book show you how to save hundreds of dollars in expensive software, and never depend on the big PC providers and their tech support again. Learn all about cheap, fast hardware, find out about the free tools that the digerati use to make their lives better, and stop paying out the nose. Don't spend a dime Table of Contents The Hardware The Ubuntu Operating System Free Software Defined E-mail Revolution Word Processing with Writer Spreadsheets with Calc Presentations with Impress Photo Management with Picasa Web Browsing with Firefox Google E-mail and Calendar Google Documents More Apps to Consider

The top Kubernetes book you must have to learn key concepts for succeeding in any production environment, in a greenfield Kubernetes environment, and in your cloud-native journey Key Features * Advance in your Kubernetes journey with guidance from a seasoned k8s practitioner and trainer * Discover best practices to implement Kubernetes in any production environment * Go beyond the basics and work with Kubernetes applications in any environment Book Description Kubernetes is a topic that is on everyone's mind right now, ranging from engineers to CTOs and CIOs. It's been called the operating system of the cloud and the data center of the cloud. Its popularity is reaching every company from startups to the Fortune 500. DevOps engineers now have the need and desire to master key concepts of Kubernetes. This book takes you through a vast amount of information about how Kubernetes works and why it works in certain ways. You'll learn everything from why cloud-native is important to implementing k8s clusters to deploying applications the way you would in production. First, you'll learn about what cloud-native is and how to get started with Kubernetes in the cloud, on-prem, and PaaS environments like OpenShift. Next, you'll learn all about deploying applications in many ways including Deployment specs, Ingress Specs, StatefulSet specs, and a lot more. Finally, you'll wrap up with Kubernetes monitoring, observability, and security. This book is put together for each chapter to build on the other with code examples in GitHub that allow you to follow along in a practical way. By the end of this book, you'll have the ability to implement Kubernetes in any environment, whether it's an existing environment, a greenfield environment, or your very-own lab running in the cloud or in your home. What you will learn * How Kubernetes works on-prem, in the cloud, and in PaaS environments * Work with networking, cluster management, and application deployment * Understand why cloud-native is crucial for Kubernetes applications * Deploy apps from all sides including Stateless, Stateful, and more * Properly monitor and implement observability into your environment * Kubernetes security at the cluster, user, and application level Who This Book Is For This book is targeted towards Cloud Engineers, Developers, DevOps Engineers, and Infrastructure Engineers who are responsible for inheriting a Kubernetes environment or creating a greenfield Kubernetes environment. Professionals who want to get started with cloud-native applications and implement k8s best practices will benefit from this book. If you are someone who has engineered environments in the cloud and on-prem and has an understanding of how to deploy applications with a solid tenure in a developer role then this book will help you further.

The most famous suppressed book in computer history * Used as an Operating System textbook at MIT"After 20 years, this is still the best expostion of the workings of a 'real' operating system." --- Ken Thompson (Developer of the UNIX operating system)After years of suppression (as trade secrets) by various owners of the UNIX code, this tome has been re-released, and we owe a debt to all involved in making this happen. I consider this to be the single most important book of 1996. Unix Review, June 1997"The Lions book," cherished by UNIX hackers and widely circulated as a photocopied bootleg document since the late 1970's, is again available in an unrestricted edition. This legendary underground classic, reproduced without modification, is really two works in one: the complete source code to an early version (Edition 6) of the UNIX operating system, a treasure in itself a brilliant commentary on that code by John Lionswith additional historical perspective essays added in 1996.Lions' marriage of source code with commentary was originally used as an operating systems textbook, a purpose for which it remains superbly well-suited (as evidenced by it's ongoing use at MIT).

Martin L. Barrett and Clifford Wagner combine the efficiency of C with the productivity of UNIX, and give you the foundation to build stronger programming skills! This clear, concise book is written for experienced programmers, as well as those with a background in mathematics, engineering, and science. Five principles guide you through a complete course in programming: . Emphasis on software design via program and data structure design, the design of tables, data encapsulation, and the use of abstract data types solidifies all aspects of the design process. The development of C and UNIX simultaneously, yet independently of one another, allows you to develop skills in both languages, or focus on them individually. Chapter summaries, review problems, and numerous practical programming problems enable you to tie several different concepts together in a coherent scheme. Extensive examples covering scientific problems, applied mathematics, and floating point arithmetic broaden the spectrum of computer science and programming. Problems feature the ideal gas law, the accuracy of summations, root finding, the future value of an annuity, simulation, time series smoothing, image processing, integrals, descriptive statistics, fuzzy sets, and sparse arrays. A focus on basic principles gives you the groundwork for understanding data structures, analysis of algorithms, numerical analysis, computer graphics, and compiler design.

If you're a software developer who has ever felt frustrated because you're missing the skills to work fluidly and efficiently on the command line, this book is for you Key Features * A practical, no-nonsense guide specifically written for developers (not sysadmins) who need to quickly learn command-line skills * Expand your practical skills and look like a wizard on the command line * Build practical skills to work effectively with the most common CLI and Unix-like systems Book Description Developers are always working with the operating system, yet most of them are incredibly uncomfortable with the Linux command line. This book is the bridge that will take you to the next level in your software development career. Most of the skills in the book can be immediately practiced on your Mac OS, Linux, or Windows machine. It's written specifically for software engineers, not Linux system administrators, so each chapter will equip you with just enough theory to understand what you're doing before diving into practical commands that you can use in your day-to-day work as a software developer. As you work through the book, you will quickly get comfortable with the basics of moving around on the command line. Once you've got the core skills, you'll see how to apply them in different contexts that you'll come across as a software developer: building and working with Docker images, spinning up applications on cloud instances, and troubleshooting issues in production environments. By the end of the book, you'll be able to use Linux and the command line comfortably, and apply your newfound skills in your day-to-day work to save time, troubleshoot issues, and be the resident command-line wizard on your team. What you will learn * Learn useful command-line tricks and tools that make software development, testing, and troubleshooting easy * Understand how Linux and command-line environments actually work * Avoid common bugs, security issues, and misunderstandings that most developers run into * Discover Linux utilities that are useful for developers (not just sysadmins), and learn how to quickly chain them together to create powerful, customized tools that can save you thousands of lines of code * Gain context and awareness of how your applications run inside common runtime environments, from Docker to modern public cloud infrastructure * Become better equipped to handle common bugs and troubleshooting situations that stump other developers * Learn powerful CLI shortcuts and utilities to expand your practical skills and look like a wizard on the command line Who This Book Is For This book is for software developers who want to understand Command-Line (CLI) and who want to quickly fill the gap to advance their skills and their career. Basic knowledge of editing text, working with files and folders, having some idea of what "operating systems" are, installing software, and using a development environment is assumed.