UploadLanguage (EN)Support
BusinessMobileSocial MediaMarketingTechnologyArt & PhotosCareerDesignEducationPresentations & Public SpeakingGovernment & NonprofitHealthcareInternetLawLeadership & ManagementAutomotiveEngineeringSoftwareRecruiting & HRRetailSalesServicesScienceSmall Business & EntrepreneurshipFoodEnvironmentEconomy & FinanceData & AnalyticsInvestor RelationsSportsSpiritualNews & PoliticsTravelSelf ImprovementReal EstateEntertainment & HumorHealth & MedicineDevices & HardwareLifestyle
Upload
Sign in
DG
Uploaded byDSC GVP
PPTX, PDF172 views

Hacktoberfest intro to Git and GitHub

This document provides an introduction and overview of Git and GitHub. It discusses version control systems and the differences between centralized and distributed version control. Key Git concepts and commands are explained such as configuring Git, creating repositories, adding and committing files, branches, pulling and pushing changes. GitHub is introduced as a platform for hosting Git repositories and collaborating on projects. The document provides instructions for adding collaborators to a GitHub repository.

Technology◦
Download to read offline
1 / 21
2 / 21
3 / 21
4 / 21
5 / 21
6 / 21
7 / 21
8 / 21
9 / 21
10 / 21
11 / 21
12 / 21
13 / 21
14 / 21
15 / 21
16 / 21
17 / 21
18 / 21
19 / 21
20 / 21
+ +Presented by
Introduction to Git and GitHub
AGENDA 1. Introduction to Version Control System - What is Version Control System - Centralised vs Distributed Version Control Systems 2. Introduction to Git - What is Git - Configuring Git and Creating repositories - Add, commit, push - The .gitignore file - Branches - Synchronising changes and Make changes 3. Introduction to GitHub - What is GitHub - Collaborating using Git and GitHub
Version Control System - A way to manage files and directories - Track changes over time - Recalls previous versions
Centralised vs Distributed VCS
Git What is Git? Git is distributed version control software.Git repository has a copy of that entire repository - every commit, every branch, every file. Why use Git ● Speed ● Merge Conflicts ● Cheap Branches ● Ease of roll back
Configure Tooling Configure user information for all local repositories $ git config --global user.name "[name]" Sets the name you want attached to your commit transactions $ git config --global user.email "[email address]" Sets the email you want attached to your commit transactions ⚙
Creating Repository When starting out with a new repository, you only need to do it once; either locally, then push to GitHub, or by cloning an existing repository. $ git init Or $ git clone [url] Clone (download) a repository that already exists on GitHub, including all of the files, branches, and commits
git add The git add command adds new or changed files in your working directory to the Git staging area. Few commonly used git add commands are: $ git add <path> Stage a specific directory or file $ git add . Stage all files (that are not listed in the .gitignore) in the entire repository $ git add -p Interactively stage hunks of changes
git status $ git status shows the current state of your Git working directory and staging area. Why use git status? The git status command only outputs information, it won't modify commits or changes in your local repository. What kind of information do we get? Where HEAD is pointing, whether that is a branch or a commit . If changed files are staged or not
git commit git commit creates a commit, which is like a snapshot of your repository. These commits are snapshots of your entire repository at specific times. It should tell a story of the history of your repository and how it came to be the way that it currently is. How to use git commit? git commit -m "descriptive commit message" git commit -am "descriptive commit message" git commit --amend
The .gitignore file A .gitignore file is a plain text file where each line contains a pattern for files/directories to ignore. Generally, this is placed in the root folder of the repository. You can also have multiple .gitignore files. Why use .gitignore? It is too easy to accidentally commit files containing sensitive information or unnecessary files. The .gitignore file comes in handy, escaping from these accidents. https://www.toptal.com/developers/gitignore -> This link can be used to generate .gitignore files effortlessly.
git push $ git push uploads all local branch commits to the corresponding remote branch. You can think of git push as “update” or “publish”. It only updates the corresponding branch on the remote. Common usages for git push ● $ git push -f ● $ git push -u origin [branch] ● $ git push --all
Branches A branch in Git is simply a lightweight movable pointer to one of these commits. The default branch name in Git is master . As you start making commits, you're given a master branch that points to the last commit you made. Every time you commit, the master branch pointer moves forward automatically. Creating a New Branch $ git branch <branch name> Switching Branches To switch to an existing branch, you run the git checkout command. $ git checkout <branch name> This moves HEAD to point to the <branch name> branch.
git pull git pull updates your current local working branch, and all of the remote tracking branches. Common usages and options for git pull ● $ git pull ● $ git pull --rebase ● $ git pull --force ● $ git pull --all
Synchronising changes $ git fetch Downloads all history from the remote tracking branches $ git merge Combines remote tracking branches into current local branch
Make changes $ git log Lists version history for the current branch $ git log --follow [file] Lists version history for a file, including renames $ git diff [first-branch]...[second-branch] Shows content differences between two branches $ git show [commit] Outputs metadata and content changes of the specified commit
How to Undo Commits in Git $ git revert git revert looks at the changes introduced in a specific commit, then applies the inverse of those changes in a new commit. $ git reset git reset is a very powerful command that may cause you to lose work. By resetting, you move the HEAD pointer and the branch pointer to another point in time - maybe making it seem like the commits in between never happened
Introduction to GitHub GitHub is a repository hosting platform for version control system git. It lets you and others work together on projects from anywhere.
Collaborating with GitHub Adding collaborators in GitHub repository A. On GitHub, navigate to the main page of the repository. B. Under your repository name, click Settings. C. In the left sidebar, click Manage access. D. Click Invite a collaborator and Add NAME to REPOSITORY. E. The user will receive an email inviting them to the repository.
Presented by The End