book

Git for Programmers

Name: Git for Programmers
Author: Jesse Liberty
ISBN: 9781801075732

by Jesse Liberty

June 2021

Beginner

264 pages

4h 30m

English

Packt Publishing

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Preface
Who this book is forWhat this book coversTo get the most out of this bookDownload the color imagesConventions usedGet in touchShare your thoughts
Introduction
About this bookVersion controlAbout the code examplesJust a brief historyTools for working with GitGitHub, et al.GUIs and the command lineThe command lineMaking the command line prettyVisual Studio 2019Getting Visual Studio for freeGitHub DesktopGetting GitGetting Git on WindowsGetting Git on a MacGetting Git on LinuxChecking your versionConfiguring Git – the command lineConfiguring Git – Visual StudioConfiguring Git – GitHub DesktopSummary
Creating Your Repository
Creating your repositoryCreating your repository on GitHub firstCloning to your computer – command lineCloning to your computer – visual studioCloning to your computer – GitHub for DesktopCreating a projectGit pullPulling down using GitHub DesktopPulling down to Visual StudioPush me, pull youPushing to the serverDownloading the changes at the command lineDownloading the changes using GitHub DesktopStarting at the command linePulling to GitHub DesktopPulling to Visual StudioCommits – best practicesHow often should I commit?Keep your commit history cleanA note on commit messagesWhen the title isn't enoughSummary
Branching, Places, and GUIs
Five placesThe work areaThe index/staging areaSkipping the staging areaVisual StudioGitHub DesktopLocal and remote repositoriesThe stashBranchesProgrammer 1 (CommandLine) and calculatorPushing the new branchExamining originAdding commits to a branchThe Book branch – Git within Visual StudioCommitting with GitHub DesktopStatusWhat's on origin?Adding more commitsExamining your commitsSummaryChallengeAnswer
Merging, Pull Requests, and Handling Merge Conflicts
Merging overviewBookWhat's in that push?Visual StudioDetails, detailsGitHub DesktopPush it alreadyVisual StudioMerge conflictsMerging from the command lineFast forwardTrue mergeAvoiding conflictsSummaryChallengeAnswerTask #1: Set up a new repository and clone it to two different foldersTask #2: Have one person populate the main branch with the beginnings of UtilityKnife, commit the changes, and push itTask #3: Each programmer creates a feature branch. Each programmer then puts the beginning of their feature into their branch, committing frequently (more frequently than you would in "real life")Sara and the CalculatorTask #4: Merge the main branch into the feature branch frequently to ensure that if there are conflicts, you catch them earlyTask #5: John is building the temperature converter. Have him "borrow" code from the calculator. See if there are merge conflicts
Rebasing, Amend, and Cherry-Picking
RebasingHow Git does it Getting your head around itRebase early and rebase oftenRebase locally onlyRebasing in practiceSeeing the rebase at workConflictsAmendingCherry-pickingVisual Studio cherry-pickingSummaryChallengeAnswerCreating a new repository on GitHubCreating two feature branches with fake programmersFrequent rebasingAmending a commit to add a fileAmending a commit to change the messageCherry-picking one commit onto main
Interactive Rebasing
Interactive rebasing at workCreating our exampleUsing interactive rebase to clean up your commitsSummaryChallenge
Workflow, Notes, and Tags
Standard workflowMirroring your repoReplicating an existing repoAdding and showing notesTagsPointing to a different tagSummaryChallenge
Aliases
AliasesSummaryChallengeAnswer
Using the Log
Getting started with logThe LogDemo programVisual StudioGitHub Desktoplog at the command lineWhich files changed?What changed in each file?diffVisual StudioWhat changed in this file over time?SearchWhere are my commits?SummaryChallengeAnswerCreate a new repositoryAdd at least 6 commitsFind the names of every file changed in each commitFind what changed in a given file over timeFind all the files you committed in the past hour (or whatever time increment makes sense)

Important Git Commands and Metadata
StashCleanMetadataSummaryChallengeAnswer
Finding a Broken Commit: Bisect and Blame
BlameChallenge
Fixing Mistakes
You wrote the wrong message in the last commitYou forgot to add changed files from your last commitProblems with the order of commits or their messagesYou need to undo changes made in a commitYou misnamed your branchYou committed to the wrong branchYou trashed a file in a previous commitYou messed up the remote by pushing a broken branchQuizAnswersWhat do you do if you left out a changed file in the last commit?What do you do if you committed to the wrong branch?What do you do if you corrupted a file in a previous commit?What do you do if you need to undo changes made in a commit?What do you do if you trashed Master by pushing a broken branch?
Next Steps
Other Books You May Enjoy
Index

Content preview from Git for Programmers

11 Finding a Broken Commit: Bisect and Blame

Sooner or later, you are likely to find that you have a bug in your program that was introduced sometime in the past. You can go searching through all your prior commits, but that is time consuming and inefficient. Git provides a command, bisect, to take care of all the hard work for you.

Here's how it works: bisect asks you for a known "bad" commit. Most often this is the last commit. It then asks for a known "good" commit – that is, a commit that is known to work. You do not have to try out a variety of commits to find this; just far back enough that you can be sure it was working back then.

If you are cautious, you may want to check out the good commit and run it just to make sure.

Bisect will ...

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ISBN: 9781801075732

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Git for Programmers

by Jesse Liberty

11

Finding a Broken Commit: Bisect and Blame

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.