Learn how to effectively utilize the Bash shell in your programming. This refreshed and expanded third edition has been updated to Bash 5.2, and many scripts have been rewritten to make them more idiomatically Bash, taking better advantage of features specific to Bash. It is easy to read, understand, and will teach you how to get to grips with Bash programming without drowning you in pages and pages of syntax. Using this book you will be able to use the shell efficiently, make scripts run faster using expansion and external commands, and understand how to overcome many common mistakes that cause scripts to fail. This book is perfect for all beginning Linux and Unix system administrators who want to be in full control of their systems, and really get to grips with Bash programming. The Bash shell is a complete programming language, not merely a glue to combine external Linux commands. By taking full advantage of Shell internals, Shell programs can perform as snappily as utilities written in C or other compiled languages. And you will see how, without assuming UNIX lore, you can write professional Bash  programs through standard programming techniques. What You'll Learn  Use the Bash shell to write utilities and accomplish most programming tasks Replace many external commands with shell parameter expansion making scripts very fast Avoid many common mistakes that cause scripts to fail See how Bash’s read line and history libraries can save typing when getting user input Build shell scripts that get information from the Web Who This Book Is For Developers, programmers, and open source enthusiasts who want to write scripts using Bash on multiple platforms

Filled with over 150 essential, practical recipes that empower Unix users to regain lost timespent creating and testing shell scripts. The majority of scripts included are POSIX-compliantand supported by many of the major shell variants, including Bash, ksh, and sh.Each real-world example recipe follows the same problem-solution structure, meaningcross-referencing is easy and fast. Recipe topics include file conversion (DOS, UNIX, andMac), system administration, resource monitoring, filename management, complex datecalculations, screen control capabilities, and much more. Completely updated for this second edition and taking all the changes of the past tenyears into account, every recipe in this book is now relevant for a modern audience. AuthorsChris Johnson's and Jayant Varma's code is clear, direct, and applicable. Add this excellentreference to your library today.

Dive into the world of developing for all of Apple platforms with SwiftUI, Apple's new framework that makes writing applications faster and easier with fewer lines of code. This book teaches the basics of SwiftUI to help you write amazing native applications using XCode. For developers already familiar with ReactNative, this book reviews the declarative, state-based DSL that manages the UI and updates it automatically will feel just like what they're used to. You'll see how SwiftUI reduces the number of lines of code required to achieve the same effects by over 60% and provides a much better experience. Like the announcement of Swift in 2014, SwiftUI is expected to fundamentally change the way developing programmers approach coding iPhone and iPad applications. This book examines how SwiftUI lowers the entry barrier for developers to write amazing cross-platform applications for iOS and iPadOS as well as WatchOS, Mac OS, and TVOS. What You'll Learn Write code in the new SwiftUI syntax Combine views to arrange them for an application Add gestures and controls to an application Who This Book Is For Anyone who wants to learn to develop apps for the Mac, iPhone, iPad, and Apple Watch using the Swift programming language. No previous programming experience is necessary.

Interested in iPhone and iPad apps development? Want to learn more? Whether you're a self-taught iPhone and iPad apps development genius or have just made your way through the pages of Beginning iOS 7 Development, we have the perfect book for you. More iOS 7 Development: Further Explorations of the iOS SDK digs deeper into Apple's latest iOS 7 SDK. Bestselling authors Dave Mark, Alex Horovitz, Kevin Kim and Jeff LaMarche explain concepts as only they can-covering topics like Core Data, peer-to-peer networking using GameKit and network streams, working with data from the web, MapKit, in-application e-mail, and more. All the concepts and APIs are clearly presented with code snippets you can customize and use, as you like, in your own apps. If you are going to write a professional iPhone or iPad app, you'll want to get your arms around Core Data, and there's no better place to do so than in the pages of this book. The book continues right where Beginning iOS 7 Development leaves off, with a series of chapters devoted to Core Data, the standard for Apple persistence.Dave, Alex, Kevin and Jeff carefully step through each Core Data concept and show techniques and tips specifically for writing larger apps-offering a breadth of coverage you won't find anywhere else. The Core Data coverage alone is worth the price of admission. But there's so much more More iOS 7 Development covers a variety of networking mechanisms, from GameKit's relatively simple BlueTooth peer-to-peer model, to the addition of Bonjour discovery and network streams, through the complexity of accessing files via the web. Dave, Alex, Kevin, and Jeff will also take you through coverage of concurrent programming and some advanced techniques for debugging your applications. The enhanced multitasking, threading, memory management and more are important. Apps are getting more and more complex, including sophisticated game apps that offer virtual or augmented reality experiences and new mapping views that take advantage of sensors and other APIs in the newest iOS 7 SDK. Whether you are a relative newcomer to iPhone and iPad or iOS development or an old hand looking to expand your horizons, there's something for everyone in More iOS 7 Development.What you'll learn * How to build apps customized for the iPad, the world's most popular tablet * How to utilize a variety of networking mechanisms, including peer-to-peer connections over Bluetooth using GameKit * Details on the addition of Bonjour discovery and network streams * How to embed maps with Map Kit and use in-application email How to access a user's iPod library and integrate music into apps * Essentials of concurrent programming and advanced debugging techniques * How to work with enhanced multitasking, threading, memory management and other APIs Tips on working with data from the web and the cloud, including Apple's iCloud * How to deal with Core Data: key concepts and techniques for writing larger applications * How to work with the iOS SDK when dealing with sensors, gyroscopes, etc. for augmented reality experiences in game and socia media appsWho this book is for This book serves as a complimentary book to Beginning iOS 7 Development and is suitable for those aspiring app developers new to iPad app development. Prior Objective-C programming experience would be helpful, but not required.

Interested in iPhone and iPad apps development? Want to learn more? Whether you are a relative newcomer to iPhone and iPad or iOS development or an old hand looking to expand your horizons, we have the perfect Swift-flavored book for you. The update to the bestselling More iPhone Development by Dave Mark and Jeff LaMarche, More iPhone Development with Swift digs deeper into the new Apple Swift programming language and iOS 8 SDK, explaining complex concepts and techniques in the same friendly, easy-to-follow style you've come to expect. More iPhone Development with Swift covers topics like Swift, Core Data, peer-to-peer networking using Multipeer Connectivity, working with data from the web, MapKit, in-application e-mail, Camera Live-Previews integration, Barcode scanning, Face recognition and more. All the concepts and APIs are clearly presented with code snippets you can customize and use, as you like, in your own apps. You'll journey through coverage of concurrent programming and some advanced techniques for debugging your applications.

So you have a great game idea for iPhone or iPad, but Objective-C just seems a bit daunting. What are your alternatives? The App Store is very picky about languages, but there is hope: Lua is a versatile, lightweight, fast, and easy to learn language that you can use to build your iOS games and get them accepted into the App Store. Learn Lua for iOS Game Development walks you through the Lua basics, then shows you how to create games using the top Lua frameworks like Corona SDK, Gideros, Moai, and even how to create games on the iPad (not just for the iPad) with Codea. You aren't tied to Xcode and Objective-C -- you can create all sorts of amazing games with Lua. But if you already have an existing iOS game, you'll also learn how to integrate Lua to extend the game. If you're an aspiring or current iOS developer, you need to know Lua, and Learn Lua for iOS Game Development will give you just what you need to do that.What you'll learn * Lua basics for iOS * How to choose a Lua framework depending on your needs * How to use Corona, Gideros, Moai, and more * How to use Lua to create a game faster and easier than with Objective-C * How to use Lua libraries, wrappers, and third party tools Who this book is for Beginning iOS developers who find Objective-C difficult but HTML5-based tools too limiting; more advanced iOS developers who want to integrate and open their apps to extension via Lua scripting.

Pro Bash Programming teaches you how to effectively utilize the Bash shell in your programming. The Bash shell is a complete programming language, not merely a glue to combine external Linux commands. By taking full advantage of Shell internals, Shell programs can perform as snappily as utilities written in C or other compiled languages. And you will see how, without assuming Unix lore, you can write professional Bash 4.3 programs through standard programming techniques. This second edition has updated for Bash 4.3, and many scripts have been rewritten to make them more idiomatically Bash, taking better advantage of features specific to Bash. It is easy to read, understand, and will teach you how to get to grips with Bash programming without drowning you in pages and pages of syntax. Using this book you will be able to use the shell efficiently, make scripts run faster using expansion and external commands, and understand how to overcome many common mistakes that cause scripts to fail. This book is perfect for all beginning Linux and Unix system administrators who want to be in full control of their systems, and really get to grips with Bash programming.