Oreilly - Git Under the Hood LiveLessons (Video Training) - 9780134133928
Oreilly - Git Under the Hood LiveLessons (Video Training)
by | Released April 2015 | ISBN: 0134133927


6+ Hours of Video InstructionGit Under the Hood LiveLessons provides developers with a deeper understanding of Git so that they can use it more effectively. The fastest way to stop stumbling around in Git and to start understanding what you're doing is to learn how Git works.Description When you come to really understand what's actually happening under-the-hood, most things that you've found mysterious or cryptic about Git will vanish. You go from being puzzled to being a resource, and some of you will go from being users to being contributors. This course provides viewers with knowledge of Git's repository pieces and the right mental models for how to use those pieces. Students will be able to compare and contrast the design and performance of Git with its predecessors as well as see the design parallels between Git and Linux. With this knowledge, viewers will understand how to experiment when Git does something unexpected and how to extend Git with new commands. In this course, all work is on the command line, so familiarity with bash is assumed, but no other programming languages are required. Each lesson calls out pause points for viewers to answer specific questions, practice what's been explained, and explore related points.About the InstructorJeffrey Haemer is a Linux/Unix professional with more than twenty years of experience. He currently does software configuration management at Gogo Business Aviation and lives in Boulder, Colorado. He has a Ph.D. in Genetics from the University of Colorado.Skill LevelIntermediateAdvancedWhat You Will LearnThe varied pieces of Git's repositoryBasic Git commands and how to use those piecesThe design and performance of Git versus its VCS progenitorsDesign parallels between Git and LinuxHow to experiment when Git does something unexpectedHow to extend Git with new commandsWho Should Take This CourseFor software developers with some experience using a version control system. Specifically, those developers who know some Git commands.Course RequirementsComfortable using a terminal window/command lineBasic-level knowledge in working with GitHave root-permission access to a Linux computer or VMTable of ContentsIntroductionLesson 1: Get Our Toes Wet covers some common Git commands, like git init and git add, and walks you through experiments to see how they actually work. You begin to build your repertoire of tools to do more sophisticated experiments, and you come to see that it's useful to watch for analogies between Linux and Git. You look inside three of the four kinds of Git objects, and you learn that Git objects, like Linux files, have no names. Finally, you come to understand why Git can trade information with remote repos blazingly fast, as you watch it play “Go Fish” with files that have no names. Lesson 2: See the Future by Looking Into the Past reviews how version control started by first looking at Marc Rochkind's SCCS and its successors RCS, VCS, and SVN. SVN is considered by some to be the crowning achievement of centralized version control systems. We address whether SVN is outdated, or if there are other reasons to switch to Git and we put them head-to-head to let you judge for yourself. Comparing and contrasting Git with other version-control systems lets you see why Git's good but also what is missing. We talk about what's not in Git, and what is being built today to fill those vacuums. We look at one specific new tool, Google repo, which is designed to let you juggle projects that need hundreds of Git repos at the same time.Lesson 3: Finding Out Why Branching and Tagging Is So Fast looks at the Git repository the .git/ directory to understand one of the most common tasks: branching. With an under-the-hood look, you learn what a branch is and how it's different from a tag. You learn what happens when you create and delete them, and when you should check out a tag or switch branches. Also, you learn about HEAD. Git calls branches and tags “references,” but a HEAD is a “symbolic reference.” You are reminded why analogies help you understand how Git works. Branches, tags, and symbolic references have similarities and differences. We pause to compare and contrast, reviewing how to make them, how to remove them, and how to change them. Finally, you cap off your journey into branches and tags by looking at Git's fourth, and last, object type: tag objects. The goal of this lesson is to solidify your understanding that when you issue a Git command, you're not just changing your working copy you're also doing something understandable to the contents of your repository.Lesson 4: Filling In the Rest of .git/ goes the rest of the way through the contents of the .git directory covering logs, the staging area, and remotes. You come to see Git in a whole new way and will have a mental model of Git that will keep you from being mystified when something goes wrong. You learn how to use logs to see where your repo has been. We talk some more about names for objects and how logs let you recover when you give Git amnesia. You see how the index is where your repo is about to go how Git uses the staging area to go even faster and how to think about what's about to happen when you commit. You firm up your understanding by looking through a dozen or so common problems that you, or others you know, have had. You see why they now make sense, why you know what to do about them, and what's happening when you push to or fetch from a remote. You look at a tool you've developed during Lessons 1 through 3, and realize you can use it as a dissecting tool to understand what's going on under the hood whenever you're perplexed. SummaryAbout LiveLessons Video Training The LiveLessons Video Training series publishes hundreds of hands-on, expert-led video tutorials covering a wide selection of technology topics designed to teach you the skills you need to succeed. This professional and personal technology video series features world-leading author instructors published by your trusted technology brands: Addison-Wesley, Cisco Press, IBM Press, Pearson IT Certification, Prentice Hall, Sams, and Que. Topics include: IT Certification, Programming, Web Development, Mobile Development, Home and Office Technologies, Business and Management, and more. View all LiveLessons on InformIT at: http://www.informit.com/livelessons. Show and hide more
  1. Introduction
    • Git Under the Hood LiveLessons: Introduction 00:03:46
  2. Lesson 1: Get Our Toes Wet
    • Learning Objectives 00:00:53
    • 1.1 Peek under the hood 00:26:26
    • 1.2 Detect the aliens among us 00:29:58
    • 1.3 Use git's swiss army knife 00:22:31
    • 1.4 Kibitz at Google go-fish 00:23:45
    • 1.5 Add new commands and review what you've learned 00:23:25
  3. Lesson 2: See the Future by Looking Into the Past
    • Learning Objectives 00:02:02
    • 2.1 Put git in context 00:22:06
    • 2.2 Handling more than one directory: CVS and SVN 00:20:54
    • 2.3 Feel the speed, feel the privacy--Part 1 00:26:11
    • 2.3 Feel the speed, feel the privacy--Part 2 00:14:08
    • 2.4 Use history to predict the future 00:26:23
    • 2.5 Handle hundreds of repositories in one project--Part 1 00:18:36
    • 2.5 Handle hundreds of repositories in one project--Part 2 00:15:16
  4. Lesson 3: Find Out Why Branching and Tagging is So Fast
    • Learning Objectives 00:01:37
    • 3.1 Look at how tags work 00:20:24
    • 3.2 See branches as bait-and-switch tags 00:15:00
    • 3.3 Answer the question: "Where's your head?" 00:14:02
    • 3.4 Move your references 00:13:47
    • 3.5 Make the fourth object type 00:17:45
  5. Lesson 4: Filling In the Rest of .git/
    • Learning Objectives 00:02:10
    • 4.1 Look through logs 00:20:47
    • 4.2 Learn what the cache is, by any other name 00:29:26
    • 4.3 Handle common mistakes with aplomb--Part 1 00:21:15
    • 4.3 Handle common mistakes with aplomb--Part 2 00:19:33
    • 4.4 See how others get your branches--Part 1 00:13:21
    • 4.4 See how others get your branches--Part 2 00:26:04
    • 4.5 Go back to the first peek and pull it all together 00:30:32
  6. Summary
    • Git Under the Hood LiveLessons: Summary 00:02:25
  7. Show and hide more

    Oreilly - Git Under the Hood LiveLessons (Video Training)

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