Questo libro è per chiunque voglia affinare le proprie competenze su Linux. Contiene suggerimenti e trucchi della riga di comando progettati per renderti veloce ed efficiente nella riga di comando.

I was emboldened to write this book after my video series called Data Science With Julia[1] got some traction. That too after a tweet about Decision Tree[2] was liked by Julia Language itself. So I thought why not give it more? This book should be seen as my attempt to explain Data Science to my self and nothing more. Will this book rise to professional stature is yet to be seen

The goal of this book is to document commonly-known and lesser-known methods of doing various tasks using only built-in bash features. Using the snippets from this bible can help remove unneeded dependencies from scripts and in most cases make them faster. I came across these tips and discovered a few while developing neofetch, pxltrm and other smaller projects.

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 4.0 programs through standard programming techniques. * Complete bash coverage * Teaches bash as a programming language * Helps you master bash 4.0 features

Become a Linux Ninja with Command Line Kung Fu! Do you think you have to lock yourself in a basement reading cryptic man pages for months on end in order to have ninja like command line skills? In reality, if you had someone share their most powerful command line tips, tricks, and patterns you'd save yourself a lot of time and frustration. What if you could look over the shoulder of a good friend that just happened to be a command line guru? What if they not only showed you the commands they were using, but why they were using them and exactly how they worked? And what if that friend took the time to write all of it down so you can refer to it whenever you liked? Well, a friend did just that. Command Line Kung Fu is packed with dozens of tips and over 100 practical real-world examples. You won't find theoretical examples in this book. The examples demonstrate how to solve actual problems and accomplish worthwhile goals. The tactics are easy to find, too. Each chapter covers a specific topic and groups related tips and examples together. For example, if you need help extracting text from a file look in the "Text Processing and Manipulation" chapter. Also, a comprehensive index is included. If you want to find every example where a given command is used -- even if it's not the main subject of the tip -- look in the index. It will list every single place in the book where that command appears. Here is just some of what you will learn by reading Command Line Kung Fu : How to quickly and easily repeat commands in your shell history Shortcuts for grabbing specific words from your shell history to use in your current command How to save a copy of your command line session for later reference How to strip out blank lines and comments from files How to control colorized text when uses pipes and pagers Ways to transform text: from changing case to substituting characters and more How to extract specific blocks of text from files or streams of input A quick tip to fix common typos How to edit files over the network How to compare the differences between files on your local computer and a remote one How to create and use SSH tunnels Ways to verify what programs are listening on what ports How to kill all the processes for a given user with a single command Strategies for dealing with multi-hop SSH connections How to disconnect from a server in a way that will allow you to pick up where you left off How to automate software installs that require user input Shell scripting tips How to automatically keep repeating a command until it succeeds The right way to delete a file that is being written to How to surf the web from the command line... and more importantly how to download anything from the web and interact with HTTP APIs Ways to determine who and what is using the most disk space How to secure your web browser session when using an open wifi hotspot How to generate random passwords from the command line Two tips for easily creating backups Tips for handling tar archives How to replace a string in multiple files at once with just one command and much more... What you learn in Command Line Kung Fu applies to any Linux distribution including Ubuntu, Debian, Linux Mint, RedHat, Fedora, OpenSUSE, Slackware, and more. Scroll up, click the "Buy Now With 1-Click" button to get your black belt in Linux Command Line Kung Fu.

Take control of your wealth management by building your own reliable, effective, and automated financial advisor tool. In Build a Robo Advisor with Python (From Scratch) you’ll learn how to: Measure returns and estimate the benefits of robo advisors Use Monte Carlo simulations to build and test financial planning tools Construct diversified, efficient portfolios using optimization and other advanced methods Implement and evaluate rebalancing methods to track a target portfolio over time Decrease taxes through tax-loss harvesting and optimized withdrawal sequencing Use reinforcement learning to find the optimal investment path up to, and after, retirement Every day automated digital advisors, also called robo advisors, make financial decisions worth millions of dollars. Build a Robo Advisor with Python (From Scratch): Automate your financial and investment decisions teaches you how to construct a Python-based financial advisor of your very own! You’ll develop a flexible tool that’s capable of managing a real investing strategy—all with popular free Python libraries. about the technology Automated “robo advisors” are commonplace in financial services, thanks to their ability to give high-quality investment advice at a fraction of the cost of human advisors. Your own robo advisor will be a real asset for your financial planning, whether you’re saving for retirement, creating a diversified portfolio, or trying to ensure your tax efficiency. about the book In Build a Robo Advisor with Python (From Scratch), you’ll design and develop a working financial advisor that can manage a real investing strategy. You’ll add new features to your advisor chapter-by-chapter, including determining the optimal weight of cryptocurrency in your portfolio, rebalancing to keep your investments on target while minimizing taxes, and using reinforcement learning to find a “glide path” that can maximize how long your money will last in retirement. Best of all, the skills you learn in reinforcement learning, convex optimization, and Monte Carlo methods can be applied to numerous lucrative fields beyond the domain of finance.

You must understand algorithms to get good at machine learning. The problem is that they are only ever explained using Math. No longer. In this mega Ebook written in the friendly Machine Learning Mastery style that you’re used to, finally cut through the math and learn exactly how machine learning algorithms work. Using clear explanations, simple pure Python code (no libraries!) and step-by-step tutorials you will discover how to load and prepare data, evaluate model skill, and implement a suite of linear, nonlinear and ensemble machine learning algorithms from scratch.

This book is for anyone wanting to sharpen their Linux skills. It contains command line tips and tricks designed to make you fast and efficient at the command line. Linux

Become a Linux Ninja with Command Line Kung Fu! Do you think you have to lock yourself in a basement reading cryptic man pages for months on end in order to have ninja like command line skills? In reality, if you had someone share their most powerful command line tips, tricks, and patterns you'd save yourself a lot of time and frustration. What if you could look over the shoulder of a good friend that just happened to be a command line guru? What if they not only showed you the commands they were using, but why they were using them and exactly how they worked? And what if that friend took the time to write all of it down so you can refer to it whenever you liked? Well, a friend did just that. Command Line Kung Fu is packed with dozens of tips and over 100 practical real-world examples. You won't find theoretical examples in this book. The examples demonstrate how to solve actual problems and accomplish worthwhile goals. The tactics are easy to find, too. Each chapter covers a specific topic and groups related tips and examples together. For example, if you need help extracting text from a file look in the "Text Processing and Manipulation" chapter. Also, a comprehensive index is included. If you want to find every example where a given command is used -- even if it's not the main subject of the tip -- look in the index. It will list every single place in the book where that command appears. Here is just some of what you will learn by reading Command Line Kung Fu : How to quickly and easily repeat commands in your shell history Shortcuts for grabbing specific words from your shell history to use in your current command How to save a copy of your command line session for later reference How to strip out blank lines and comments from files How to control colorized text when uses pipes and pagers Ways to transform text: from changing case to substituting characters and more How to extract specific blocks of text from files or streams of input A quick tip to fix common typos How to edit files over the network How to compare the differences between files on your local computer and a remote one How to create and use SSH tunnels Ways to verify what programs are listening on what ports How to kill all the processes for a given user with a single command Strategies for dealing with multi-hop SSH connections How to disconnect from a server in a way that will allow you to pick up where you left off How to automate software installs that require user input Shell scripting tips How to automatically keep repeating a command until it succeeds The right way to delete a file that is being written to How to surf the web from the command line... and more importantly how to download anything from the web and interact with HTTP APIs Ways to determine who and what is using the most disk space How to secure your web browser session when using an open wifi hotspot How to generate random passwords from the command line Two tips for easily creating backups Tips for handling tar archives How to replace a string in multiple files at once with just one command and much more... What you learn in Command Line Kung Fu applies to any Linux distribution including Ubuntu, Debian, Linux Mint, RedHat, Fedora, OpenSUSE, Slackware, and more. Scroll up, click the "Buy Now With 1-Click" button to get your black belt in Linux Command Line Kung Fu.

Книга является сопроводительным теоретическим материалом к проекту разработки аппаратного калькулятора на AVR микроконтроллере на ассемблере. В ней изложены теоретические основы машинной арифметики, дается построение и обоснование алгоритмов для арифметики с плавающей точкой (IEEE 754), а также даны общие соображения о реализации ввода/вывода для калькулятора. В книге дана ссылка на GitHub-репозиторий, где находится полный код прошивки калькулятора, код библиотек и проект симуляции полнофункционального калькулятора в Proteus.

Lucrarea descrie in detaliu unul dintre cele mai folosite standarde de programare pe partea server a aplicatiilor destinate Web-ului: CGI (Common Gateway Interface), punind un accent deosebit asupra elaborarii de aplicatii CGI in doua dintre limbajele de tip script, larg utilizate pe platforma Linux: shell-ul bash si limbajul Perl. Alaturi de ilustrarea celor mai interesante si mai utile caracteristici ale acestor limbaje, autorii insista asupra prelucrarii practice a datelor prin intermediul serverelor de baze de date relationale (e.g. MySQL sau PostgreSQL) si a documentelor XML (Extensible Markup Language). Numeroasele studii de caz prezentate demonstreaza flexibilitatea si usurinta in realizarea de aplicatii Web complexe, utilizind exclusiv tehnologii si sisteme deschise. CD-ul care insoteste lucrarea cuprinde atit codurile-sursa ale majoritatii exemplelor si studiilor de caz prezentate, cit si documentatii suplimentare, programe si aplicatii utile pentru experimentarea si aprofundarea materialului din carte, disponibile pentru diferite distributii Linux sau alte platforme.Volumul poate fi folosit in cadrul laboratoarelor si orelor de tehnologii Web, fiind destinata atit studentilor si elevilor din facultatile si liceele cu profil informatic, cit si proiectantilor si administratorilor Web si tuturor celor interesati de domeniul stiintei calculatoarelor. De asemenea, lucrarea poate fi considerata o initiere utila in problematica limbajelor script bash si Perl, instrumente indispensabile in administrarea si programarea in principal a mediilor Linux, dar disponibile si pe alte platforme.

Are you ready to dive into the world of Python programming? Look no further! "The Python Blueprint: A Hands-on Approach to Conquer Python Programming from Scratch" is your comprehensive guide designed specifically for beginners. This book seamlessly intertwines basic Python programming concepts with practical exercises and real-world projects, providing you with a profound understanding of Python and its vast capabilities. Inside "The Python Blueprint", you'll discover a range of fundamental and advanced Python topics, including data types, variables, operators, data structures, object-oriented programming (OOP), exception handling, file operations, and more. But we don't stop at the basics. We delve into topics such as regular expressions, functional programming, web scraping, API interactions, databases, and cloud computing. We've carefully designed this Python guide to be easy to understand, with clear explanations, step-by-step examples, and hands-on projects that bring theories to life. From understanding algorithms and data structures to unraveling the mysteries of machine learning with libraries like NumPy, Pandas, and Scikit-Learn, this book is an all-in-one learning resource for Python programming. Whether you're an aspiring data scientist, a coding enthusiast looking to add a new language to your arsenal, or a complete beginner wanting to kickstart your programming journey, this Python book is crafted just for you. It's not just a book; it's a blueprint that will provide you with the skills and confidence you need to navigate the Python landscape and solve real-world problems efficiently. "Python Blueprint" is more than a book; it's a journey into the heart of Python programming, a journey we invite you to join. It's time to conquer Python programming. Start your journey today!

Scala from Scratch: Exploration is the first in a series of two books that teach you the Scala programming language. Readers that have some experience with an object-oriented or imperative language, like Java, Ruby, or Python, will get a comprehensive overview of what Scala brings to the table. The goal is to get you excited about Scala and give you a strong foundation for writing your first applications and continuing your journey. By the end of the book, you will have a good idea of what it's like to work with Scala, and you will have written a small, but complete command-line application based on a Functional Core, Imperative Shell architecture.In this book you will learn about functional and object-oriented aspects of Scala. You will learn how to write expressive, intent-revealing code using pattern matching, functional sequence processing and for comprehensions, and how to design data types that enforce their business invariants in a functional way, without throwing exceptions. You will get a first glimpse at Scala's powerful type system and how to abstract over concrete types, and you will learn all there is to know about working with Option, Scala's approach at avoiding the million dollar mistake of null references.If you are excited and want to continue your journey, you will be able to do with the upcoming second book in the series, Scala from Scratch: Understanding, which will go even deeper into the topics explored in this book and will discuss advanced language features and patterns.

## What to Learn From This Book? Redis could be considered one of the building blocks of modern computing that stood the test of time. The knowledge required for building such a project is broader and deeper than usual application-level development. Learning from such projects is a good way for software developers to level up their skills. Redis is a good target for learning because it covers two important subjects of software engineering: network programming and data structures. • While there are many guides on socket APIs or high-level libraries, network programming is more than calling APIs or libraries. It is important to understand core concepts such as the event loop, protocols, timers, etc, which this book will cover. The lack of understanding can result in fatal mistakes even if you are just employing high-level networking libraries or frameworks in your applications. • Although many people learned some basic data structures from textbooks, there is still something more to learn. Data structures implemented in real projects often have some practical considerations which are not touched by textbooks. Learning how data structures are used in a non-toy environment (especially in C) is a unique experience from building Redis. Like most real-world projects, Redis is a complex project built with lots of effort, which can be hard to grasp for beginners. Instead, this book takes an opposite approach: learning by building things from scratch. ## Why From Scratch? A couple of points: 2023-01-31 ## 01. Introduction • To learn faster. By building things from scratch, concepts can be introduced gradually. Starting from the small, adding things incrementally, and getting the big picture in the end. • To learn deeper. While there are many materials explaining how an existing stuff works, the understanding obtained by reading those materials is often not the same as building the stuff yourself. It is easy to mistake memorization for understanding, and it's easier to pick up unimportant details than principles and basics. • To learn more. The "from scratch" approach forces you to touch every aspect of the subject -there are no shortcuts to knowledge! And often not every aspect is known to you beforehand, you may discover "things I don't know I don't know" in the process.

__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.

Bash is one of the most popular "shell," or command language interpreters, used with the Unix operating system. Bash is an sh-compatible shell that incorporates useful features from the Korn shell ksh and the C shell csh. It is intended to be a conformant implementation of the IEEE POSIX Shell and Tools specification (IEEE Working Group 1003.2). It offers functional improvements over sh for both interactive and programming use. What's more Bash is portable; it currently runs on nearly every version of Unix and a few other operating systems--independently supported ports exist for MS-DOS, OS/2, Windows 95, and Windows NT. iUniverse.com Computer Books are composed of freely available online computer manuals, industry standard specifications, and electronically distributed computer-programming guides. They include open documents collections of industry specifications and standards and a collection of the best open source documentation on the Web...the most complete open source library available anywhere. Each book contains the complete, unabridged text of the original document. Our on-demand publishing process gives you the actual text of the online document in a convenient, inexpensive, easy-to-use format. And remember...iUniverse.com donates a portion of the profits from open document and open source books to support the mission of the free software community.

Данное руководство не предполагает наличие у читателя познаний в области программирования на языке сценариев, однако, быстро восполняет этот недостаток . . . постепенно, шаг за шагом раскрывая мудрость и красоту UNIX. Это руководство может рассматриваться как учебник, предназначенный для самостоятельного изучения или как справочник по программированию на shell. Руководство снабжено серией хорошо прокомментированных примеров, поскольку лучший путь к изучению языка сценариев -- это написание сценариев.

Scala from Scratch: Understanding is the second in a series of two books that teach you the Scala programming language. Readers that have read Scala from Scratch: Exploration or have learned some Scala through other means will get a deeper understanding of the language features and underlying functional programming concepts that have been explored in the first book. You will also learn about important advanced language features that play a crucial role in many real-life Scala projects. While doing so, you'll get to know best practices that have been established over the years. By the end of the book, you will have a grasp of the language, its idioms, and common tools and techniques, allowing you to be a productive member in commercial or open-source Scala projects.In this book you will learn more about algebraic data types and about pattern matching, and you will get insights into functional ways of error handling. You will learn about essential ideas of functional programming like currying and partial functional application. You will also explore advanced aspects of the Scala type system like covariance and contravariance, and how to employ the type class pattern when abstracting over concrete types. You will learn about the design of Scala's collections API and how to work with Scala collections effectively. You will get a good grasp of property-based testing, an alternative to example-based testing, and you will dive deeper into sbt, the standard build tool in the Scala ecosystem. You will also learn how to interact with the outside world in a purely functional way, and about different approaches at concurrent programming in Scala.Some of the content in this book is based on The Neophyte's Guide to Scala. However, it has been heavily revised, and amended with a lot of new content. In some ways, you can think of it as a second, extended edition of that book — structured and written so that it builds on what readers have learned in Scala from Scratch: Exploration.

Сценарии оболочки есть везде, особенно те, которые написаны с синтаксисом, совместимым с bash. Но эти сценарии могут быть сложными и неясными. Сложность — враг безопасности, но также и враг удобочитаемости и понимания. С помощью этой практической книги вы научитесь расшифровывать старый код bash и писать новый код, максимально понятный и читаемый. Авторы Карл Альбинг и Дж. П. Воссен покажут вам, как использовать мощь и гибкость оболочки в своих интересах. Вы можете знать достаточно, чтобы выжить, но эта книга поднимет ваши навыки от управляемых до великолепных. Используете ли вы Linux, Unix, Windows или Mac, вы научитесь читать и писать сценарии на уровне эксперта. Ваше будущее будет вам благодарно. Вы изучите четкие идиомы, которые следует использовать, и непонятные, которых следует избегать, чтобы вы могли: Пишите полезный, гибкий и читаемый код bash в стиле, совместимом с разработчиками по всему миру. Экономьте время и обеспечьте согласованность при автоматизации задач Узнайте, как идиомы bash могут сделать ваш код чистым и лаконичным

bash Cookbook......Page 1 Table of Contents......Page 3 Preface......Page 13 Who Should Read This Book......Page 14 GNU Software......Page 15 A Note About Code Examples......Page 16 A Note About Perl......Page 17 Conventions Used in This Book......Page 18 We’d Like to Hear from You......Page 19 Carl......Page 20 Cameron......Page 21 Beginning bash......Page 22 Why bash?......Page 23 The bash Shell......Page 24 Discussion......Page 25 See Also......Page 26 Discussion......Page 27 See Also......Page 28 Solution......Page 29 Discussion......Page 30 Discussion......Page 31 Discussion......Page 33 Solution......Page 34 Discussion......Page 35 Discussion......Page 36 Solution......Page 37 Solution......Page 38 See Also......Page 40 Solution......Page 41 See Also......Page 42 See Also......Page 43 Discussion......Page 44 Discussion......Page 45 Official documentation......Page 46 See Also......Page 48 Standard Output......Page 49 Discussion......Page 50 See Also......Page 51 Discussion......Page 52 Discussion......Page 53 Solution......Page 54 Discussion......Page 55 Solution......Page 56 See Also......Page 57 Solution......Page 58 See Also......Page 59 Solution......Page 60 See Also......Page 61 Problem......Page 62 Discussion......Page 63 Discussion......Page 64 Problem......Page 65 Discussion......Page 66 Discussion......Page 67 Solution......Page 68 Problem......Page 69 Discussion......Page 70 Problem......Page 71 See Also......Page 72 Discussion......Page 73 Solution......Page 74 See Also......Page 75 Discussion......Page 76 Discussion......Page 77 Problem......Page 78 Discussion......Page 79 Discussion......Page 80 Discussion......Page 81 Solution......Page 82 See Also......Page 84 Discussion......Page 85 Discussion......Page 86 See Also......Page 87 Discussion......Page 88 Problem......Page 90 Discussion......Page 91 Solution......Page 92 Solution......Page 93 See Also......Page 94 See Also......Page 95 Discussion......Page 96 Discussion......Page 97 Discussion......Page 98 Discussion......Page 99 See Also......Page 100 Basic Scripting: Shell Variables......Page 101 See Also......Page 103 Solution......Page 104 See Also......Page 105 Discussion......Page 106 Problem......Page 107 Discussion......Page 108 Discussion......Page 110 Solution......Page 111 Solution......Page 112 Discussion......Page 113 Discussion......Page 115 Solution......Page 117 See Also......Page 118 Discussion......Page 119 Discussion......Page 120 Discussion......Page 121 Solution......Page 122 Discussion......Page 123 Solution......Page 124 See Also......Page 125 Discussion......Page 126 Solution......Page 127 See Also......Page 128 Solution......Page 129 Discussion......Page 130 Solution......Page 132 Discussion......Page 133 Problem......Page 135 Discussion......Page 136 See Also......Page 137 Discussion......Page 138 Discussion......Page 139 Discussion......Page 140 Discussion......Page 142 Problem......Page 143 Discussion......Page 144 See Also......Page 146 Discussion......Page 147 Problem......Page 149 Discussion......Page 150 Discussion......Page 151 Solution......Page 152 Solution......Page 153 Discussion......Page 154 Solution......Page 155 Discussion......Page 156 See Also......Page 157 Solution......Page 158 Discussion......Page 159 Problem......Page 160 Discussion......Page 161 Discussion......Page 163 See Also......Page 164 Intermediate Shell Tools I......Page 165 Discussion......Page 166 See Also......Page 167 See Also......Page 168 See Also......Page 169 Solution......Page 170 See Also......Page 171 Discussion......Page 172 7.7 Searching with More Complex Patterns......Page 173 Discussion......Page 174 Solution......Page 175 See Also......Page 176 Discussion......Page 177 Discussion......Page 178 Discussion......Page 179 Solution......Page 180 Discussion......Page 181 Solution......Page 182 See Also......Page 183 Discussion......Page 184 See Also......Page 185 Solution......Page 186 Solution......Page 187 Solution......Page 188 Discussion......Page 189 See Also......Page 190 Discussion......Page 191 Discussion......Page 192 Solution......Page 193 Discussion......Page 194 Solution......Page 195 Solution......Page 196 Discussion......Page 197 Solution......Page 198 Solution......Page 199 Discussion......Page 200 Solution......Page 201 8.15 Doing More with less......Page 202 Discussion......Page 203 See Also......Page 204 Problem......Page 205 Discussion......Page 206 Solution......Page 207 Problem......Page 208 Problem......Page 209 Problem......Page 210 See Also......Page 211 Discussion......Page 212 Problem......Page 213 See Also......Page 214 Discussion......Page 215 Solution......Page 216 Discussion......Page 217 See Also......Page 219 Solution......Page 220 Solution......Page 221 Discussion......Page 222 Discussion......Page 223 Solution......Page 224 Discussion......Page 225 Solution......Page 226 Discussion......Page 227 Solution......Page 228 Discussion......Page 231 Solution......Page 232 See Also......Page 233 Solution......Page 234 Discussion......Page 235 See Also......Page 236 Working with Dates and Times......Page 237 Discussion......Page 238 Solution......Page 239 See Also......Page 240 Solution......Page 241 Discussion......Page 242 Solution......Page 243 Problem......Page 244 Problem......Page 245 Solution......Page 246 Discussion......Page 247 Solution......Page 248 Solution......Page 249 See Also......Page 250 Solution......Page 251 Discussion......Page 252 Problem......Page 253 Solution......Page 254 Discussion......Page 257 Problem......Page 258 Solution......Page 259 Discussion......Page 260 Solution......Page 263 Discussion......Page 264 Problem......Page 265 Solution......Page 266 Discussion......Page 267 See Also......Page 268 Problem......Page 269 Discussion......Page 270 Solution......Page 272 Discussion......Page 273 Discussion......Page 274 Discussion......Page 276 Solution......Page 277 Solution......Page 278 Discussion......Page 279 Discussion......Page 280 Solution......Page 281 Solution......Page 282 Solution......Page 283 See Also......Page 284 Solution......Page 285 Discussion......Page 286 Solution......Page 287 See Also......Page 288 Solution......Page 289 Discussion......Page 290 Discussion......Page 292 Solution......Page 294 Solution......Page 296 Solution......Page 298 Solution......Page 299 See Also......Page 300 Writing Secure Shell Scripts......Page 301 Discussion......Page 303 Solution......Page 304 Discussion......Page 305 Discussion......Page 306 See Also......Page 307 Discussion......Page 308 Discussion......Page 309 Solution......Page 310 Discussion......Page 311 Discussion......Page 312 Solution......Page 313 Discussion......Page 314 Solution......Page 317 See Also......Page 318 Discussion......Page 319 Solution......Page 320 Discussion......Page 321 14.16 Restricting Guest Users......Page 322 Discussion......Page 323 Solution......Page 324 See Also......Page 325 Solution......Page 326 See Also......Page 327 Discussion......Page 328 Solution......Page 329 Discussion......Page 335 See Also......Page 336 Solution......Page 337 Solution......Page 339 See Also......Page 340 Advanced Scripting......Page 341 Discussion......Page 342 Problem......Page 343 See Also......Page 344 Discussion......Page 345 See Also......Page 346 Discussion......Page 347 Solution......Page 348 See Also......Page 349 Discussion......Page 350 See Also......Page 352 Solution......Page 353 Discussion......Page 354 Solution......Page 355 Problem......Page 356 Solution......Page 357 Discussion......Page 359 Solution......Page 361 Discussion......Page 362 See Also......Page 363 Solution......Page 364 See Also......Page 365 Problem......Page 366 Solution......Page 367 Discussion......Page 368 Problem......Page 369 Solution......Page 370 Discussion......Page 371 See Also......Page 372 Configuring and Customizing bash......Page 373 Basic prompts......Page 374 Fancy prompts......Page 376 Discussion......Page 378 See Also......Page 381 Discussion......Page 382 Solution......Page 383 Discussion......Page 387 Solution......Page 388 Discussion......Page 389 Solution......Page 390 See Also......Page 391 Solution......Page 392 Discussion......Page 394 Solution......Page 395 Solution......Page 397 Solution......Page 398 Discussion......Page 399 Solution......Page 401 Solution......Page 402 Discussion......Page 403 Discussion......Page 404 Solution......Page 405 Discussion......Page 406 Solution......Page 410 Discussion......Page 412 Solution......Page 415 See Also......Page 418 Assumptions......Page 419 Criteria......Page 420 Solution......Page 421 See Also......Page 431 Discussion......Page 432 Discussion......Page 434 Discussion......Page 435 Solution......Page 436 Configuration......Page 437 Solution......Page 438 Solution......Page 439 See Also......Page 440 See Also......Page 441 See Also......Page 442 Problem......Page 443 Solution......Page 444 Discussion......Page 445 See Also......Page 446 Solution......Page 447 Discussion......Page 448 Solution......Page 449 Solution......Page 450 Discussion......Page 451 Solution......Page 453 Discussion......Page 454 Discussion......Page 455 Solution......Page 457 Discussion......Page 459 Solution......Page 460 Discussion......Page 461 See Also......Page 463 Solution......Page 464 Problem......Page 465 Discussion......Page 466 Solution......Page 467 Discussion......Page 468 Solution......Page 469 Discussion......Page 470 Solution......Page 471 Discussion......Page 472 See Also......Page 473 Problem......Page 474 Discussion......Page 475 Solution......Page 476 Discussion......Page 477 Solution......Page 478 Problem......Page 479 Problem......Page 480 Solution......Page 481 See Also......Page 482 Solution......Page 483 Solution......Page 484 See Also......Page 485 Discussion......Page 486 See Also......Page 487 Solution......Page 488 Problem......Page 489 Discussion......Page 490 Problem......Page 491 Discussion......Page 492 See Also......Page 494 Problem......Page 495 Discussion......Page 496 Solution......Page 497 Solution......Page 498 Discussion......Page 499 See Also......Page 500 Discussion......Page 501 See Also......Page 502 bash Invocation......Page 503 Prompt String Customizations......Page 504 ANSI Color Escape Sequences......Page 505 Built-in Commands and Reserved Words......Page 506 Built-in Shell Variables......Page 508 set Options......Page 512 shopt Options......Page 513 Adjusting Shell Behavior Using set, shopt, and Environment Variables......Page 515 Test Operators......Page 526 I/O Redirection......Page 527 echo Options and Escape Sequences......Page 529 printf......Page 530 Examples......Page 533 Date and Time String Formatting with strftime......Page 534 Pattern-Matching Characters......Page 535 tr Escape Sequences......Page 536 Readline Init File Syntax......Page 537 emacs Mode Commands......Page 539 vi Control Mode Commands......Page 541 Table of ASCII Values......Page 543 Startup-Files Directory Examples......Page 545 Command-Line Processing Steps......Page 553 Quoting......Page 556 eval......Page 557 Revision Control......Page 559 Cons......Page 560 Example......Page 561 See Also......Page 565 Cons......Page 566 Example......Page 567 RCS......Page 571 Example......Page 572 Workon Script......Page 576 See Also......Page 577 Change Tracking and Versions......Page 578 Accessing These Features......Page 579 Unpacking the Archive......Page 580 Documentation......Page 581 Configuring and Building bash......Page 582 Examples......Page 584 Reporting Bugs......Page 585 Index......Page 587

"The Self-Taught Programmer's Journey: A Comprehensive Guide to Becoming a Professional Programmer from Scratch, Tailored for Self-Starters" is an indispensable roadmap for individuals embarking on a self-taught journey to become professional programmers, even without any prior coding experience. In today's technology-driven world, the demand for skilled programmers is on the rise, and this book provides a clear and structured path for anyone with the ambition to enter the world of programming. This comprehensive guide is uniquely crafted to cater to self-starters, individuals who are motivated and determined to learn programming on their own terms. It recognizes that not everyone has access to formal education or coding bootcamps, and it empowers readers to take control of their learning journey. The book commences with a gentle introduction to programming concepts and languages, ensuring that even those with zero coding experience can follow along. It covers fundamental programming concepts, such as variables, data types, control structures, and algorithms, in a beginner-friendly manner. The author uses clear explanations, real-world examples, and hands-on exercises to facilitate learning.

Se você achou que encontraria um manual com todas as informações e exemplos de uso de todos os comandos e recursos do Bash, você entendeu errado o nome deste livro. Este é um manual do programador que utiliza os conceitos da Filosofia Unix, conforme implementada pelo Projeto GNU, para programar em Bash.Com toda humildade de quem reconhece a sua própria estatura diante de gigantes, é isso que eu me proponho a fazer neste livro. Mais do que oferecer mais uma fonte de consulta para o seu arsenal de programador, o que eu realmente quero é convidá-lo para uma jornada de descobertas, onde cada novo conceito, cada comando, cada linha de código seja uma surpresa e um motivo a mais para você se apaixonar pela possibilidade de programar em Bash.

O'Reilly's bestselling book on Linux's bash shell is at itagain. Now that Linux is an established player both as aserver and on the desktop Learning the bash Shell has beenupdated and refreshed to account for all the latest changes.Indeed, this third edition serves as the most valuable guideyet to the bash shell.As any good programmer knows, the first thing users of theLinux operating system come face to face with is the shellthe UNIX term for a user interface to the system. In otherwords, it's what lets you communicate with the computer viathe keyboard and display. Mastering the bash shell mightsound fairly simple but it isn't. In truth, there are manycomplexities that need careful explanation, which is justwhat Learning the bash Shell provides.If you are new to shell programming, the book provides anexcellent introduction, covering everything from the mostbasic to the most advanced features. And if you've beenwriting shell scripts for years, it offers a great way tofind out what the new shell offers. Learning the bash Shellis also full of practical examples of shell commands andprograms that will make everyday use of Linux that mucheasier. With this book, programmers will learn:How to install bash as your login shellThe basics of interactive shell use, including UNIX file anddirectory structures, standard I/O, and background jobs Command line editing, history substitution, and key bindingsHow to customize your shell environment without programming The nuts and bolts of basic shell programming, flow controlstructures, command-line options and typed variables Process handling, from job control to processes, coroutinesand subshells Debugging techniques, such as trace andverbose modes Techniques for implementing system-wide shell customizationand features related to system security

Introduction 3 What is Coding for Kids? What Age is Appropriate to Learn to Code? 9 Why Should My Child Learn to Code? Why isn’t K-12th Grade School Enough? 12 What are the Best Programming Languages for Kids? 22 Four Important Tips to Follow Before You Get Your Kid Started Coding! 26 Top Free & Paid Coding Games, Apps, Websites, Classes, Curriculum, and More to Get You Started! 34 What type of computer should I invest in for my child? 47 In Conclusion... 49