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Books > Computing & IT > Computer hardware & operating systems > Operating systems & graphical user interfaces (GUIs) > Unix, Unix Linux & Unix TCL/TK
Enhance Linux security, application platforms, and virtualization
solutions with SELinux 3 to work within your boundaries, your
rules, and your policies Key Features Learn what SELinux is, and
how it acts as a mandatory access control system on Linux Apply and
tune SELinux enforcement to users, applications, platforms, and
virtualization solutions Use real-life examples and custom policies
to strengthen the security posture of your systems Book
DescriptionLinux is a dominant player in many organizations and in
the cloud. Securing the Linux environment is extremely important
for any organization, and Security-Enhanced Linux (SELinux) acts as
an additional layer to Linux system security. SELinux System
Administration covers basic SELinux concepts and shows you how to
enhance Linux system protection measures. You will get to grips
with SELinux and understand how it is integrated. As you progress,
you'll get hands-on experience of tuning and configuring SELinux
and integrating it into day-to-day administration tasks such as
user management, network management, and application maintenance.
Platforms such as Kubernetes, system services like systemd, and
virtualization solutions like libvirt and Xen, all of which offer
SELinux-specific controls, will be explained effectively so that
you understand how to apply and configure SELinux within these
applications. If applications do not exert the expected behavior,
you'll learn how to fine-tune policies to securely host these
applications. In case no policies exist, the book will guide you
through developing custom policies on your own. By the end of this
Linux book, you'll be able to harden any Linux system using SELinux
to suit your needs and fine-tune existing policies and develop
custom ones to protect any app and service running on your Linux
systems. What you will learn Understand what SELinux is and how it
is integrated into Linux Tune Linux security using policies and
their configurable settings Manage Linux users with least-privilege
roles and access controls Use SELinux controls in system services
and virtualization solutions Analyze SELinux behavior through log
events and policy analysis tools Protect systems against unexpected
and malicious behavior Enhance existing policies or develop custom
ones Who this book is forThis Linux sysadmin book is for Linux
administrators who want to control the secure state of their
systems using SELinux, and for security professionals who have
experience in maintaining a Linux system and want to know about
SELinux. Experience in maintaining Linux systems, covering user
management, software installation and maintenance, Linux security
controls, and network configuration is required to get the most out
of this book.
Develop a solid understanding of cloud computing, Linux virtual
machine, container virtualization, and other fundamental concepts
to create and manage your Linux workload in Azure Key Features
Deploy and manage virtual machines in the Azure environment Explore
open source tools to integrate automation and orchestration
Implement Linux features to create and manage containers Book
DescriptionThanks to its flexibility in delivering scalable cloud
solutions, Microsoft Azure is a suitable platform for managing all
your workloads. You can use it to implement Linux virtual machines
and containers, and to create applications in open source languages
with open APIs. This Linux administration book first takes you
through the fundamentals of Linux and Azure to prepare you for the
more advanced Linux features in later chapters. With the help of
real-world examples, you'll learn how to deploy virtual machines
(VMs) in Azure, expand their capabilities, and manage them
efficiently. You will manage containers and use them to run
applications reliably, and in the concluding chapter, you'll
explore troubleshooting techniques using a variety of open source
tools. By the end of this book, you'll be proficient in
administering Linux on Azure and leveraging the tools required for
deployment. What you will learn Grasp the fundamentals of
virtualization and cloud computing Understand file hierarchy and
mount new filesystems Maintain the life cycle of your application
in Azure Kubernetes Service Manage resources with the Azure CLI and
PowerShell Manage users, groups, and filesystem permissions Use
Azure Resource Manager to redeploy virtual machines Implement
configuration management to configure a VM correctly Build a
container using Docker Who this book is forIf you are a Linux
administrator or a Microsoft professional looking to deploy and
manage your workload in Azure, this book is for you. Although not
necessary, knowledge of Linux and Azure will assist with
understanding core concepts.
Learn how to write high-quality kernel module code, solve common
Linux kernel programming issues, and understand the fundamentals of
Linux kernel internals Key Features Discover how to write kernel
code using the Loadable Kernel Module framework Explore
industry-grade techniques to perform efficient memory allocation
and data synchronization within the kernel Understand the
essentials of key internals topics such as kernel architecture,
memory management, CPU scheduling, and kernel synchronization Book
DescriptionLinux Kernel Programming is a comprehensive introduction
for those new to Linux kernel and module development. This
easy-to-follow guide will have you up and running with writing
kernel code in next-to-no time. This book uses the latest 5.4
Long-Term Support (LTS) Linux kernel, which will be maintained from
November 2019 through to December 2025. By working with the 5.4 LTS
kernel throughout the book, you can be confident that your
knowledge will continue to be valid for years to come. You'll start
the journey by learning how to build the kernel from the source.
Next, you'll write your first kernel module using the powerful
Loadable Kernel Module (LKM) framework. The following chapters will
cover key kernel internals topics including Linux kernel
architecture, memory management, and CPU scheduling. During the
course of this book, you'll delve into the fairly complex topic of
concurrency within the kernel, understand the issues it can cause,
and learn how they can be addressed with various locking
technologies (mutexes, spinlocks, atomic, and refcount operators).
You'll also benefit from more advanced material on cache effects, a
primer on lock-free techniques within the kernel, deadlock
avoidance (with lockdep), and kernel lock debugging techniques. By
the end of this kernel book, you'll have a detailed understanding
of the fundamentals of writing Linux kernel module code for
real-world projects and products. What you will learn Write
high-quality modular kernel code (LKM framework) for 5.x kernels
Configure and build a kernel from source Explore the Linux kernel
architecture Get to grips with key internals regarding memory
management within the kernel Understand and work with various
dynamic kernel memory alloc/dealloc APIs Discover key internals
aspects regarding CPU scheduling within the kernel Gain an
understanding of kernel concurrency issues Find out how to work
with key kernel synchronization primitives Who this book is forThis
book is for Linux programmers beginning to find their way with
Linux kernel development. If you're a Linux kernel and driver
developer looking to overcome frequent and common kernel
development issues, or understand kernel intervals, you'll find
plenty of useful information. You'll need a solid foundation of
Linux CLI and C programming before you can jump in.
Leverage Azure's cloud capabilities to find the most optimized path
to meet your firm's cloud infrastructure needs Key Features Get to
grips with the core Azure infrastructure technologies and solutions
Develop the ability to opt for cloud design and architecture that
best fits your organization Cover the entire spectrum of cloud
migration from planning to implementation and best practices Book
DescriptionMicrosoft Azure is a powerful cloud computing platform
that offers a multitude of services and capabilities for
organizations of any size moving to a cloud strategy. This fourth
edition comes with the latest updates on cloud security
fundamentals, hybrid cloud, cloud migration, Microsoft Azure Active
Directory, and Windows Virtual Desktop. It encapsulates the entire
spectrum of measures involved in Azure deployment that includes
understanding Azure fundamentals, choosing a suitable cloud
architecture, building on design principles, becoming familiar with
Azure DevOps, and learning best practices for optimization and
management. The book begins by introducing you to the Azure cloud
platform and demonstrating the substantial scope of digital
transformation and innovation that can be achieved with Azure's
capabilities. The guide also acquaints you with practical insights
into application modernization, Azure Infrastructure as a Service
(IaaS) deployment, infrastructure management, key application
architectures, best practices of Azure DevOps, and Azure
automation. By the end of this book, you will have acquired the
skills required to drive Azure operations from the planning and
cloud migration stage to cost management and troubleshooting. What
you will learn Understand core Azure infrastructure technologies
and solutions Carry out detailed planning for migrating
applications to the cloud with Azure Deploy and run Azure
infrastructure services Define roles and responsibilities in DevOps
Get a firm grip on Azure security fundamentals Carry out cost
optimization in Azure Who this book is forThis book is designed to
benefit Azure architects, cloud solution architects, Azure
developers, Azure administrators, and anyone who wants to develop
expertise in operating and administering the Azure cloud. Basic
familiarity with operating systems and databases will help you
grasp the concepts covered in this book.
Harness the power of Linux to create versatile and robust embedded
solutions Key Features Learn how to develop and configure robust
embedded Linux devices Explore the new features of Linux 5.4 and
the Yocto Project 3.1 (Dunfell) Discover different ways to debug
and profile your code in both user space and the Linux kernel Book
DescriptionIf you're looking for a book that will demystify
embedded Linux, then you've come to the right place. Mastering
Embedded Linux Programming is a fully comprehensive guide that can
serve both as means to learn new things or as a handy reference.
The first few chapters of this book will break down the fundamental
elements that underpin all embedded Linux projects: the toolchain,
the bootloader, the kernel, and the root filesystem. After that,
you will learn how to create each of these elements from scratch
and automate the process using Buildroot and the Yocto Project. As
you progress, the book will show you how to implement an effective
storage strategy for flash memory chips and install updates to a
device remotely once it's deployed. You'll also learn about the key
aspects of writing code for embedded Linux, such as how to access
hardware from apps, the implications of writing multi-threaded
code, and techniques to manage memory in an efficient way. The
final chapters demonstrate how to debug your code, whether it
resides in apps or in the Linux kernel itself. You'll also cover
the different tracers and profilers that are available for Linux so
that you can quickly pinpoint any performance bottlenecks in your
system. By the end of this Linux book, you'll be able to create
efficient and secure embedded devices using Linux. What you will
learn Use Buildroot and the Yocto Project to create embedded Linux
systems Troubleshoot BitBake build failures and streamline your
Yocto development workflow Update IoT devices securely in the field
using Mender or balena Prototype peripheral additions by reading
schematics, modifying device trees, soldering breakout boards, and
probing pins with a logic analyzer Interact with hardware without
having to write kernel device drivers Divide your system up into
services supervised by BusyBox runit Debug devices remotely using
GDB and measure the performance of systems using tools such as
perf, ftrace, eBPF, and Callgrind Who this book is forIf you're a
systems software engineer or system administrator who wants to
learn how to implement Linux on embedded devices, then this book is
for you. It's also aimed at embedded systems engineers accustomed
to programming for low-power microcontrollers, who can use this
book to help make the leap to high-speed systems on chips that can
run Linux. Anyone who develops hardware that needs to run Linux
will find something useful in this book - but before you get
started, you'll need a solid grasp on POSIX standard, C
programming, and shell scripting.
Many aspiring hackers are unfamiliar with Linux, having learned
computer basics in a Windows or Mac environment. This can pose the
single most important obstacle to mastering the skills to becoming
a better hacker; while hacking can be done with Windows or OS X,
nearly all hacking tools are developed specifically for Linux.
Linux Basics for Hackers aims to provide you with a foundation of
Linux skills that every hacker needs. As you progress, you'll have
access to numerous real-world examples and hands-on exercises to
apply your new knowledge and bring yourself up to speed.
A practical guide to understanding the latest features of the Rust
programming language, useful libraries, and frameworks that will
help you design and develop interesting projects Key Features Work
through projects that will help you build high-performance
applications with Rust Delve into concepts such as error handling,
memory management, concurrency, generics, and macros with Rust
Improve business productivity by choosing the right libraries and
frameworks for your applications Book DescriptionRust is a
community-built language that solves pain points present in many
other languages, thus improving performance and safety. In this
book, you will explore the latest features of Rust by building
robust applications across different domains and platforms. The
book gets you up and running with high-quality open source
libraries and frameworks available in the Rust ecosystem that can
help you to develop efficient applications with Rust. You'll learn
how to build projects in domains such as data access, RESTful web
services, web applications, 2D games for web and desktop,
interpreters and compilers, emulators, and Linux Kernel modules.
For each of these application types, you'll use frameworks such as
Actix, Tera, Yew, Quicksilver, ggez, and nom. This book will not
only help you to build on your knowledge of Rust but also help you
to choose an appropriate framework for building your project. By
the end of this Rust book, you will have learned how to build fast
and safe applications with Rust and have the real-world experience
you need to advance in your career. What you will learn Access
TOML, JSON, and XML files and SQLite, PostgreSQL, and Redis
databases Develop a RESTful web service using JSON payloads Create
a web application using HTML templates and JavaScript and a
frontend web application or web game using WebAssembly Build
desktop 2D games Develop an interpreter and a compiler for a
programming language Create a machine language emulator Extend the
Linux Kernel with loadable modules Who this book is forThis Rust
programming book is for developers who want to get hands-on
experience with implementing their knowledge of Rust programming,
and are looking for expert advice on which libraries and frameworks
they can adopt to develop software that typically uses the Rust
language.
A practical handbook that will help you bridge the gap between
Windows and Linux to develop apps that leverage the best features
across both ecosystems with seamless interoperability Key Features
Configure and control WSL to suit your needs and preferences
Discover tips for working seamlessly between Windows and WSL Linux
distros Learn how to work effectively with containers in WSL, as
well as how to containerize your development environments with
Visual Studio Code to isolate your dependencies Book
DescriptionWindows Subsystem for Linux (WSL) allows you to run
native Linux tools alongside traditional Windows applications.
Whether you're developing applications across multiple operating
systems or looking to add more tools to your Windows environment,
WSL offers endless possibilities. You'll start by understanding
what WSL is and learn how to install and configure WSL along with
different Linux distros. Next, you'll learn techniques that allow
you to work across both Windows and Linux environments. You'll
discover how to install and customize the new Windows Terminal.
We'll also show you how to work with code in WSL using Visual
Studio Code (VS Code). In addition to this, you'll explore how to
work with containers with Docker and Kubernetes, and how to
containerize a development environment using VS Code. While
Microsoft has announced support for GPU and GUI applications in an
upcoming release of WSL, at the time of writing these features are
either not available or only in early preview releases. This book
focuses on the stable, released features of WSL and giving you a
solid understanding of the amazing techniques that you can use with
WSL today. By the end of this book, you'll be able to configure WSL
and Windows Terminal to suit your preferences, and productively use
Visual Studio Code for developing applications with WSL. What you
will learn Install and configure Windows Subsystem for Linux and
Linux distros Access web applications running in Linux from Windows
Invoke Windows applications, file systems, and environment
variables from bash in WSL Customize the appearance and behavior of
the Windows Terminal to suit your preferences and workflows Explore
various tips for enhancing the Visual Studio Code experience with
WSL Install and work with Docker and Kubernetes within Windows
Subsystem for Linux Discover various productivity tips for working
with Command-line tools in WSL Who this book is forThis book is for
developers who want to use Linux tools on Windows, including
Windows-native programmers looking to ease into a Linux environment
based on project requirements or Linux developers who've recently
switched to Windows. This book is also for web developers working
on open source projects with Linux-first tools such as Ruby or
Python, or developers looking to switch between containers and
development machines for testing apps. Prior programming or
development experience and a basic understanding of running tasks
in bash, PowerShell, or the Windows Command Prompt will be
required.
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