A Quick Start to Git and GitHub

Installation
Configuration

Initializing a Repository
Cloning a Repository

Checking Status
Adding Files
Making Commits
Pushing Changes
Pulling Changes

Introduction

Git and GitHub have become essential tools for developers worldwide. Git is a version control system that tracks changes in source code, while GitHub is a web-based platform for hosting Git repositories. Mastering Git and GitHub is crucial for modern software development and devops. This guide will walk you through setting up Git, creating a repository and using the basic commands like commits, pushing and pulling.

Setting Up Git

Installation

To get started with Git,

Choose your local computer OS. For windows, choose the appropriate for your configuration and install.

Configuration

After installing Git, initialize your git in git bash and configure your username and email. These details will be associated with your commits.

On your local computer task bar search for git bash and run as administrator.

Configure Username. Run the command below personalizing the username and press enter.
git config --global user.name "Your GitHub username"
Configure email. Run the command below personalizing the email and press enter.
git config --global user.email "your github email address"

Creating a Repository

A Git repository is where your project files and their revision history are stored.

Run this command to create a new directory called gitlab.
mkdir gitlab
Run the command below to change directory
cd gitlab

Initializing a Repository

To create a new repository, run the following command
git init
This will initialize empty git repository in the local directory.

To open a new visual studio code, run the following command and press enter.
code .

Basic Git Commands

You need to have a code before you can carry out any other command.

On the Visual studio code create a .html file. On the menu, click on the 3 dot select terminal and then new terminal.

On the terminal, run git commands like check status, add, commit, push and pull.

Checking Status

git status

Adding Files

Add your file to the staging area.

git add filename

git add .

Making Commits

Commits are snapshots of your project at a given point in time. Once your changes are staged with the add command, commit them with a message:

git commit -m "Your commit message"

Pushing Changes

Pushing command sends your commits to a remote repository, like GitHub. Hence, the remote repository has to exist first before a push command can take effect.

Creating Remote Repository GitHub

go github.com and sign in
click on + to add new repository

Give it a name.
choose public or private
Add README file for your documentation
Click create repository

go to code and copy the repository url.

connect the repository to the local machine. use the following command.
git remote add origin repo url

Push changes
git push origin master

sign in to GitHub when prompted and authorize git ecosystem. This is only applicable when you are pushing for the first time.
Go back to GitHub and notice the file is now in GitHub.
add a readme file on visual studio code. Afterwards do git add, git commit and git push.

Pulling Changes

Pulling fetches and merges changes from the remote repository to your local repository.

Edit any of the file on GitHub, commit changes

On your terminal, type the pull command below and notice the changes now reflect.

git pull origin master

Check out My Repository

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