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The CLI Book

Author : Robert Kowalski
Publisher : Apress
ISBN 13 : 1484231775
Total Pages : 118 pages
Book Rating : 4.4/5 (842 download)

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Book Synopsis The CLI Book by : Robert Kowalski

Download or read book The CLI Book written by Robert Kowalski and published by Apress. This book was released on 2017-11-29 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn everything that makes command line clients such as Git and npm so successful, and how to compose the best on your own. This book is your concise step-by-step guide to writing command line clients with Node.js. You'll start by discovering what is needed for a successful command line client and develop a solid foundation for practical skill. Next you will build an application based on learned principles in Node.js. The sometimes-puzzling world of streaming is fully explained with practical examples, as well as unit testing and integration testing. Lastly you'll explore a full range of tips and tricks designed to make the daily life of a software maintainer easier. The Node.js ecosystem provides support for writing command line clients and has a thriving, very active community. With this book as your guide, you'll become a successful creator of your own command line clients. Make an impact in the areas you really care about using The CLI Book. What You'll Learn Become a successful creator of your own command line clients and make an impact Set your command line tool apart from others Prioritize user experience Employ best practices to structure and architect your own clients Apply tips and tricks collected from years of developing with Node.js Who This Book Is For Those who know some JavaScript and want to deepen their knowledge, especially in the area of CLI development.

The Linux Command Line, 2nd Edition

Author : William Shotts
Publisher : No Starch Press
ISBN 13 : 1593279531
Total Pages : 504 pages
Book Rating : 4.5/5 (932 download)

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Book Synopsis The Linux Command Line, 2nd Edition by : William Shotts

Download or read book The Linux Command Line, 2nd Edition written by William Shotts and published by No Starch Press. This book was released on 2019-03-05 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: You've experienced the shiny, point-and-click surface of your Linux computer--now dive below and explore its depths with the power of the command line. The Linux Command Line takes you from your very first terminal keystrokes to writing full programs in Bash, the most popular Linux shell (or command line). Along the way you'll learn the timeless skills handed down by generations of experienced, mouse-shunning gurus: file navigation, environment configuration, command chaining, pattern matching with regular expressions, and more. In addition to that practical knowledge, author William Shotts reveals the philosophy behind these tools and the rich heritage that your desktop Linux machine has inherited from Unix supercomputers of yore. As you make your way through the book's short, easily-digestible chapters, you'll learn how to: • Create and delete files, directories, and symlinks • Administer your system, including networking, package installation, and process management • Use standard input and output, redirection, and pipelines • Edit files with Vi, the world's most popular text editor • Write shell scripts to automate common or boring tasks • Slice and dice text files with cut, paste, grep, patch, and sed Once you overcome your initial "shell shock," you'll find that the command line is a natural and expressive way to communicate with your computer. Just don't be surprised if your mouse starts to gather dust.

Data Science at the Command Line

Author : Jeroen Janssens
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 1491947802
Total Pages : 207 pages
Book Rating : 4.4/5 (919 download)

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Book Synopsis Data Science at the Command Line by : Jeroen Janssens

Download or read book Data Science at the Command Line written by Jeroen Janssens and published by "O'Reilly Media, Inc.". This book was released on 2014-09-25 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This hands-on guide demonstrates how the flexibility of the command line can help you become a more efficient and productive data scientist. You’ll learn how to combine small, yet powerful, command-line tools to quickly obtain, scrub, explore, and model your data. To get you started—whether you’re on Windows, OS X, or Linux—author Jeroen Janssens introduces the Data Science Toolbox, an easy-to-install virtual environment packed with over 80 command-line tools. Discover why the command line is an agile, scalable, and extensible technology. Even if you’re already comfortable processing data with, say, Python or R, you’ll greatly improve your data science workflow by also leveraging the power of the command line. Obtain data from websites, APIs, databases, and spreadsheets Perform scrub operations on plain text, CSV, HTML/XML, and JSON Explore data, compute descriptive statistics, and create visualizations Manage your data science workflow using Drake Create reusable tools from one-liners and existing Python or R code Parallelize and distribute data-intensive pipelines using GNU Parallel Model data with dimensionality reduction, clustering, regression, and classification algorithms

The Linux Command Line, 2nd Edition

Author : William Shotts
Publisher : No Starch Press
ISBN 13 : 1593279523
Total Pages : 505 pages
Book Rating : 4.5/5 (932 download)

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Book Synopsis The Linux Command Line, 2nd Edition by : William Shotts

Download or read book The Linux Command Line, 2nd Edition written by William Shotts and published by No Starch Press. This book was released on 2019-03-07 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: You've experienced the shiny, point-and-click surface of your Linux computer—now dive below and explore its depths with the power of the command line. The Linux Command Line takes you from your very first terminal keystrokes to writing full programs in Bash, the most popular Linux shell (or command line). Along the way you'll learn the timeless skills handed down by generations of experienced, mouse-shunning gurus: file navigation, environment configuration, command chaining, pattern matching with regular expressions, and more. In addition to that practical knowledge, author William Shotts reveals the philosophy behind these tools and the rich heritage that your desktop Linux machine has inherited from Unix supercomputers of yore. As you make your way through the book's short, easily-digestible chapters, you'll learn how to: Create and delete files, directories, and symlinks Administer your system, including networking, package installation, and process management Use standard input and output, redirection, and pipelines Edit files with Vi, the world's most popular text editor Write shell scripts to automate common or boring tasks Slice and dice text files with cut, paste, grep, patch, and sed Once you overcome your initial "shell shock," you'll find that the command line is a natural and expressive way to communicate with your computer. Just don't be surprised if your mouse starts to gather dust.

Shared Source CLI Essentials

Author : David Stutz
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 9780596003517
Total Pages : 388 pages
Book Rating : 4.0/5 (35 download)

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Book Synopsis Shared Source CLI Essentials by : David Stutz

Download or read book Shared Source CLI Essentials written by David Stutz and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise an insightful guide provides a road map for anyone trying to navigate or manipulate the Shared Source Code, necessary for anyone wanting to jump into the complex nucleus of the .NET platform.

Windows Command Line Administration Instant Reference

Author : John Paul Mueller
Publisher : John Wiley & Sons
ISBN 13 : 047093090X
Total Pages : 583 pages
Book Rating : 4.4/5 (79 download)

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Book Synopsis Windows Command Line Administration Instant Reference by : John Paul Mueller

Download or read book Windows Command Line Administration Instant Reference written by John Paul Mueller and published by John Wiley & Sons. This book was released on 2010-09-09 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: The perfect companion to any book on Windows Server 2008 or Windows 7, and the quickest way to access critical information Focusing just on the essentials of command-line interface (CLI), Windows Command-Line Administration Instant Reference easily shows how to quickly perform day-to-day tasks of Windows administration without ever touching the graphical user interface (GUI). Specifically designed for busy administrators, Windows Command-Line Administration Instant Reference replaces many tedious GUI steps with just one command at the command-line, while concise, easy to access answers provide solutions on the spot. Provides practical examples, step-by-step instructions, and contextual information Quick-reference style delivers the commands needed for managing data and the network; working with Active Directory; performing diagnostics and maintenance; and, creating batch files and scripts Covers administration for Windows Server 2008 Server Core, Windows Server 2008 (including R2), and Windows 7 Administrators can get more done in less time with CLI than they can with the standard GUI. Compact enough to keep on hand at all times, Windows Command-Line Administration Instant Reference provides administrators with a convenient, fast and simple way to use CLI.

Command-Line Rust

Author : Ken Youens-Clark
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 1098109384
Total Pages : 389 pages
Book Rating : 4.0/5 (981 download)

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Book Synopsis Command-Line Rust by : Ken Youens-Clark

Download or read book Command-Line Rust written by Ken Youens-Clark and published by "O'Reilly Media, Inc.". This book was released on 2022-01-13 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updated in 2024: A new version has been released that simplifies the programs used in the book, based on changes in the Rust language and crates since original publication. The code has been updated to reflect version 4 of the clap crate. For several consecutive years, Rust has been voted "most loved programming language" in Stack Overflow's annual developer survey. This open source systems programming language is now used for everything from game engines and operating systems to browser components and virtual reality simulation engines. But Rust is also an incredibly complex language with a notoriously difficult learning curve. Rather than focusing on the language as a whole, this guide teaches Rust using a single small, complete, focused program in each chapter. Author Ken Youens-Clark shows you how to start, write, and test each of these programs to create a finished product. You'll learn how to handle errors in Rust, read and write files, and use regular expressions, Rust types, structs, and more. Discover how to: Use Rust's standard libraries and data types such as numbers, strings, vectors, structs, Options, and Results to create command-line programs Write and test Rust programs and functions Read and write files, including stdin, stdout, and stderr Document and validate command-line arguments Write programs that fail gracefully Parse raw and delimited text manually, using regular expressions and Rust crates Use and control randomness

In the Beginning...Was the Command Line

Author : Neal Stephenson
Publisher : Harper Collins
ISBN 13 : 0061832901
Total Pages : 156 pages
Book Rating : 4.0/5 (618 download)

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Book Synopsis In the Beginning...Was the Command Line by : Neal Stephenson

Download or read book In the Beginning...Was the Command Line written by Neal Stephenson and published by Harper Collins. This book was released on 2009-10-13 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is "the Word" -- one man's word, certainly -- about the art (and artifice) of the state of our computer-centric existence. And considering that the "one man" is Neal Stephenson, "the hacker Hemingway" (Newsweek) -- acclaimed novelist, pragmatist, seer, nerd-friendly philosopher, and nationally bestselling author of groundbreaking literary works (Snow Crash, Cryptonomicon, etc., etc.) -- the word is well worth hearing. Mostly well-reasoned examination and partial rant, Stephenson's In the Beginning... was the Command Line is a thoughtful, irreverent, hilarious treatise on the cyber-culture past and present; on operating system tyrannies and downloaded popular revolutions; on the Internet, Disney World, Big Bangs, not to mention the meaning of life itself.

Efficient Linux at the Command Line

Author : Daniel J. Barrett
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 1098113373
Total Pages : 248 pages
Book Rating : 4.0/5 (981 download)

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Book Synopsis Efficient Linux at the Command Line by : Daniel J. Barrett

Download or read book Efficient Linux at the Command Line written by Daniel J. Barrett and published by "O'Reilly Media, Inc.". This book was released on 2022-02-16 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Take your Linux skills to the next level! Whether you're a system administrator, software developer, site reliability engineer, or enthusiastic hobbyist, this practical, hands-on book will help you work faster, smarter, and more efficiently. You'll learn how to create and run complex commands that solve real business problems, process and retrieve information, and automate manual tasks. You'll also truly understand what happens behind the shell prompt, so no matter which commands you run, you can be more successful in everyday Linux use and more competitive on the job market. As you build intermediate to advanced command-line skills, you'll learn how to: Choose or construct commands that get your work done quickly Run commands efficiently and navigate the Linux filesystem with ease Build powerful, complex commands out of simpler ones Transform text files and query them like databases to achieve business goals Control Linux point-and-click features from the command line

Node.js Design Patterns

Author : Mario Casciaro
Publisher : Packt Publishing Ltd
ISBN 13 : 1839210443
Total Pages : 661 pages
Book Rating : 4.8/5 (392 download)

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Book Synopsis Node.js Design Patterns by : Mario Casciaro

Download or read book Node.js Design Patterns written by Mario Casciaro and published by Packt Publishing Ltd. This book was released on 2020-07-29 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn proven patterns, techniques, and tricks to take full advantage of the Node.js platform. Master well-known design principles to create applications that are readable, extensible, and that can grow big. Purchase of the print or Kindle book includes a free eBook in the PDF format. Key Features Learn how to create solid server-side applications by leveraging the full power of Node.js Understand how Node.js works and learn how to take full advantage of its core components as well as the solutions offered by its ecosystem Avoid common mistakes and use proven patterns to create production grade Node.js applications Book DescriptionIn this book, we will show you how to implement a series of best practices and design patterns to help you create efficient and robust Node.js applications with ease. We kick off by exploring the basics of Node.js, analyzing its asynchronous event driven architecture and its fundamental design patterns. We then show you how to build asynchronous control flow patterns with callbacks, promises and async/await. Next, we dive into Node.js streams, unveiling their power and showing you how to use them at their full capacity. Following streams is an analysis of different creational, structural, and behavioral design patterns that take full advantage of JavaScript and Node.js. Lastly, the book dives into more advanced concepts such as Universal JavaScript, scalability and messaging patterns to help you build enterprise-grade distributed applications. Throughout the book, you’ll see Node.js in action with the help of several real-life examples leveraging technologies such as LevelDB, Redis, RabbitMQ, ZeroMQ, and many others. They will be used to demonstrate a pattern or technique, but they will also give you a great introduction to the Node.js ecosystem and its set of solutions.What you will learn Become comfortable with writing asynchronous code by leveraging callbacks, promises, and the async/await syntax Leverage Node.js streams to create data-driven asynchronous processing pipelines Implement well-known software design patterns to create production grade applications Share code between Node.js and the browser and take advantage of full-stack JavaScript Build and scale microservices and distributed systems powered by Node.js Use Node.js in conjunction with other powerful technologies such as Redis, RabbitMQ, ZeroMQ, and LevelDB Who this book is for This book is for developers and software architects who have some prior basic knowledge of JavaScript and Node.js and now want to get the most out of these technologies in terms of productivity, design quality, and scalability. Software professionals with intermediate experience in Node.js and JavaScript will also find valuable the more advanced patterns and techniques presented in this book. This book assumes that you have an intermediate understanding of web application development, databases, and software design principles.

Introduction to the Command Line (Second Edition)

Author : Nicholas Marsh
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781450588300
Total Pages : 0 pages
Book Rating : 4.5/5 (883 download)

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Book Synopsis Introduction to the Command Line (Second Edition) by : Nicholas Marsh

Download or read book Introduction to the Command Line (Second Edition) written by Nicholas Marsh and published by Createspace Independent Publishing Platform. This book was released on 2010-07-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to the Command Line is a visual guide that teaches the most important Unix and Linux shell commands in a simple and straight forward manner. Command line programs covered in this book are demonstrated with typical usage to aid in the learning process and help you master the command line quickly and easily. Covers popular Unix, Linux, and BSD systems.

Unix Power Tools

Author : Shelley Powers
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 0596003307
Total Pages : 1154 pages
Book Rating : 4.5/5 (96 download)

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Book Synopsis Unix Power Tools by : Shelley Powers

Download or read book Unix Power Tools written by Shelley Powers and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the growing popularity of Linux and the advent of Darwin, Unix has metamorphosed into something new and exciting. No longer perceived as a difficult operating system, more and more users are discovering the advantages of Unix for the first time. But whether you are a newcomer or a Unix power user, you'll find yourself thumbing through the goldmine of information in the new edition of Unix Power Tools to add to your store of knowledge. Want to try something new? Check this book first, and you're sure to find a tip or trick that will prevent you from learning things the hard way. The latest edition of this best-selling favorite is loaded with advice about almost every aspect of Unix, covering all the new technologies that users need to know. In addition to vital information on Linux, Darwin, and BSD, Unix Power Tools 3rd Edition now offers more coverage of bash, zsh, and other new shells, along with discussions about modern utilities and applications. Several sections focus on security and Internet access. And there is a new chapter on access to Unix from Windows, addressing the heterogeneous nature of systems today. You'll also find expanded coverage of software installation and packaging, as well as basic information on Perl and Python. Unix Power Tools 3rd Edition is a browser's book...like a magazine that you don't read from start to finish, but leaf through repeatedly until you realize that you've read it all. Bursting with cross-references, interesting sidebars explore syntax or point out other directions for exploration, including relevant technical details that might not be immediately apparent. The book includes articles abstracted from other O'Reilly books, new information that highlights program tricks and gotchas, tips posted to the Net over the years, and other accumulated wisdom. Affectionately referred to by readers as "the" Unix book, UNIX Power Tools provides access to information every Unix user is going to need to know. It will help you think creatively about UNIX, and will help you get to the point where you can analyze your own problems. Your own solutions won't be far behind.

C++/ Cli In Action

Author : Nishant Sivakumar
Publisher : Dreamtech Press
ISBN 13 : 9788177227314
Total Pages : 416 pages
Book Rating : 4.2/5 (273 download)

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Book Synopsis C++/ Cli In Action by : Nishant Sivakumar

Download or read book C++/ Cli In Action written by Nishant Sivakumar and published by Dreamtech Press. This book was released on 2007-05 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: C++/CLI in Action is a practical guide that will help you breathe new life into your legacy C++ programs. The book begins with a concise C++/CLI tutorial. It then quickly moves to the key themes of native/managed code interop and mixed-mode programming. You ll learn to take advantage of GUI frameworks like Windows Forms and WPF while keeping your native C++ business logic. The book also covers methods for accessing C# or VB.NET components and libraries.

Small, Sharp Software Tools

Author : Brian P. Hogan
Publisher : Pragmatic Bookshelf
ISBN 13 : 168050701X
Total Pages : 450 pages
Book Rating : 4.6/5 (85 download)

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Book Synopsis Small, Sharp Software Tools by : Brian P. Hogan

Download or read book Small, Sharp Software Tools written by Brian P. Hogan and published by Pragmatic Bookshelf. This book was released on 2019-06-03 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The command-line interface is making a comeback. That's because developers know that all the best features of your operating system are hidden behind a user interface designed to help average people use the computer. But you're not the average user, and the CLI is the most efficient way to get work done fast. Turn tedious chores into quick tasks: read and write files, manage complex directory hierarchies, perform network diagnostics, download files, work with APIs, and combine individual programs to create your own workflows. Put down that mouse, open the CLI, and take control of your software development environment. No matter what language or platform you're using, you can use the CLI to create projects, run servers, and manage files. You can even create new tools that fit right in with grep, sed, awk, and xargs. You'll work with the Bash shell and the most common command-line utilities available on macOS, Windows 10, and many flavors of Linux. Create files without opening a text editor. Manage complex directory strutures and move around your entire file system without touching the mouse. Diagnose network issues and interact with APIs. Chain several commands together to transform data, and create your own scripts to automate repetitive tasks. Make things even faster by customizing your environment, creating shortcuts, and integrating other tools into your environment. Hands-on activities and exercises will cement your newfound knowledge and give you the confidence to use the CLI to its fullest potential. And if you're worried you'll wreck your system, this book walks you through creating an Ubuntu virtual machine so you can practice worry-free. Dive into the CLI and join the thousands of other devs who use it every day. What You Need: You'll need macOS, Windows 10, or a Linux distribution like Ubuntu, Fedora, CentOS, or Debian using the Bash shell.

Linux Command Line and Shell Scripting Bible

Author : Richard Blum
Publisher : John Wiley & Sons
ISBN 13 : 1119700930
Total Pages : 832 pages
Book Rating : 4.1/5 (197 download)

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Book Synopsis Linux Command Line and Shell Scripting Bible by : Richard Blum

Download or read book Linux Command Line and Shell Scripting Bible written by Richard Blum and published by John Wiley & Sons. This book was released on 2020-12-08 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advance your understanding of the Linux command line with this invaluable resource Linux Command Line and Shell Scripting Bible, 4th Edition is the newest installment in the indispensable series known to Linux developers all over the world. Packed with concrete strategies and practical tips, the latest edition includes brand-new content covering: Understanding the Shell Writing Simple Script Utilities Producing Database, Web & Email Scripts Creating Fun Little Shell Scripts Written by accomplished Linux professionals Christine Bresnahan and Richard Blum, Linux Command Line and Shell Scripting Bible, 4th Edition teaches readers the fundamentals and advanced topics necessary for a comprehensive understanding of shell scripting in Linux. The book is filled with real-world examples and usable scripts, helping readers navigate the challenging Linux environment with ease and convenience. The book is perfect for anyone who uses Linux at home or in the office and will quickly find a place on every Linux enthusiast’s bookshelf.

Command Line Fundamentals

Author : Vivek Nagarajan
Publisher : Packt Publishing Ltd
ISBN 13 : 1789803527
Total Pages : 314 pages
Book Rating : 4.7/5 (898 download)

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Book Synopsis Command Line Fundamentals by : Vivek Nagarajan

Download or read book Command Line Fundamentals written by Vivek Nagarajan and published by Packt Publishing Ltd. This book was released on 2018-12-24 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master shell basics and Unix tools and discover easy commands to perform complex tasks with speed Key FeaturesLearn why the Bash shell is widely used on Linux and iOSExplore advanced shell concepts, such as pipes and redirectionUnderstand how to use Unix command-line tools as building blocks for different tasksBook Description The most basic interface to a computer—the command line—remains the most flexible and powerful way of processing data and performing and automating various day-to-day tasks. Command Line Fundamentals begins by exploring the basics, and then focuses on the most common tool, the Bash shell (which is standard on all Linux and iOS systems). As you make your way through the book, you'll explore the traditional Unix command-line programs as implemented by the GNU project. You'll also learn to use redirection and pipelines to assemble these programs to solve complex problems. By the end of this book, you'll have explored the basics of shell scripting, allowing you to easily and quickly automate tasks. What you will learnUse the Bash shell to run commandsUtilize basic Unix utilities such as cat, tr, sort, and uniqExplore shell wildcards to manage groups of filesApply useful keyboard shortcuts in shellEmploy redirection and pipes to process dataWrite both basic and advanced shell scripts to automate tasksWho this book is for Command Line Fundamentals is for programmers who use GUIs but want to understand how to use the command line to complete tasks faster.

Build Awesome Command-line Applications in Ruby 2

Author : David Bryant Copeland
Publisher :
ISBN 13 : 9781937785758
Total Pages : 0 pages
Book Rating : 4.7/5 (857 download)

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Book Synopsis Build Awesome Command-line Applications in Ruby 2 by : David Bryant Copeland

Download or read book Build Awesome Command-line Applications in Ruby 2 written by David Bryant Copeland and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Speak directly to your system. With its simple commands, flags, and parameters, a well-formed command-line application is the quickest way to automate a backup, a build, or a deployment and simplify your life. With this book, you'll learn specific ways to write command-line applications that are easy to use, deploy, and maintain, using a set of clear best practices and the Ruby programming language. This book is designed to make any programmer or system administrator more productive in their job. Now updated for Ruby 2. Writing a command-line application that's self-documenting, robust, adaptable and forever useful is easier than you might think. Ruby is particularly suited to this task, because it combines high-level abstractions with "close to the metal" system interaction wrapped up in a concise, readable syntax. Plus, Ruby has the support of a rich ecosystem of open source tools and libraries. Ten insightful chapters each explain and demonstrate a command-line best practice. You'll see how to use these tools to elevate the lowliest automation script to a maintainable, polished application. You'll learn how to use free, open source parsers to create user-friendly command-line interfaces as well as command suites. You'll see how to use defaults to keep options simple for everyday users, while giving advanced users options for more complex tasks. There's no reason why a command-line application should lack documentation, whether it's part of a help command or a man page; you'll find out when and how to use both. Your journey from command-line novice to pro ends with a look at valuable approaches to testing your apps, and includes some fun techniques for outside-the-box, colorful interfaces that will delight your users. With Ruby, the command line is not dead. Long live the command line.