Git & GitHub Hands-on Lab

An individual online exercise by the AI Club at G.H. Raisoni University, Saikheda.

You will create a file about yourself, save changes in commits, undo one commit, and send a pull request (PR). Use Git Bash for the commands. Keep the same terminal open throughout.

Your file will be public. Share only details you are comfortable making public; do not add a phone number, personal email, or address.

Before you begin

Create a GitHub account and install Git if you have not already. Check Git with git --version.

Word	Meaning
Fork	Your copy of this online repository
Clone	Download your fork to your computer
Branch	A separate line of work
Commit	A saved checkpoint
Revert	A new commit that undoes an earlier commit
Push	Upload your commits to GitHub
Pull request (PR)	Ask to add your work to the original repository

1. Star, fork, and clone

1. Open KEYUR141/Git-Github-Lab. Click Star, then Fork.
2. In Git Bash, replace your-github-username with your own GitHub username (not your full name):

GITHUB_USERNAME="your-github-username"
git clone "https://github.com/${GITHUB_USERNAME}/Git-Github-Lab.git"
cd Git-Github-Lab
git config --local user.name "Your Full Name"
git config --local user.email "your-github-email@example.com"
git remote -v

Use an email connected to your GitHub account. git remote -v should show your fork, not KEYUR141.

2. Create your branch

Your username gives you a unique branch and file, so you do not need a team name or PC number. Keep the same Git Bash window open so GITHUB_USERNAME stays set.

git switch main
git pull --ff-only origin main
git switch -c "developer/${GITHUB_USERNAME}"
git branch --show-current

The last command should show developer/your-github-username with your actual username.

Task 1: Create your file

Create developers/your-github-username.md in a text editor. For now, put only this heading in it, using your actual full name:

# Developer: Your Full Name

Save it, then run:

git status
git add "developers/${GITHUB_USERNAME}.md"
git diff --staged
git commit -m "lab: create developer file"
git log --oneline -1

git add stages the file; git diff --staged shows what the commit will save.

Task 2: Edit and commit

Add a Name: line to the same file:

# Developer: Your Full Name

Name: Your Full Name

Save it, then run:

git diff
git add "developers/${GITHUB_USERNAME}.md"
git commit -m "lab: add name"
git log --oneline -2

git diff shows your unstaged edits; git log shows your saved commits.

Task 3: Revert that edit

git revert HEAD --no-edit
git log --oneline -3

Your file should contain only the heading again. The old commit remains in history; the revert adds a new commit that cancels its change.

Task 4: Add your final details

Fill in the same file with your own information. Here, Branch means your academic branch/specialization, not the Git branch.

# Developer: Your Full Name

Name: Your Full Name
Department: Your Department
Year: Your Year
Branch: Your Academic Branch
Interests or hobbies: Your Interests or Hobbies

Save it, then run:

git diff
git add "developers/${GITHUB_USERNAME}.md"
git commit -m "lab: add final details"
git log --oneline -4

You should see four lab commits: create, add name, revert, and final details.

Task 5: Push and open a PR

git push -u origin "developer/${GITHUB_USERNAME}"

Open your fork on GitHub. Click Contribute → Open pull request (or Compare & pull request). Check that the base is KEYUR141/Git-Github-Lab:main and the head is your fork's developer/your-github-username branch. Title it Add developer profile: your-github-username, then create the PR. The automatic check will report whether the tasks are complete.

If another PR was merged while you worked, you can sync the original repository before pushing again:

git remote add upstream https://github.com/KEYUR141/Git-Github-Lab.git
git fetch upstream
git merge upstream/main
git push

Command reminder

Command	What it does
git --version	Check Git is installed
git clone	Download your fork
git config --local	Set the name and email recorded on your commits
git remote -v	Show connected online repositories
git switch	Change or create a branch
git pull --ff-only	Update your local main
git branch --show-current	Show your current branch
git status	Show changed and staged files
git diff / git diff --staged	Preview edits before and after staging
git add	Stage a file
git commit	Save a checkpoint
git log --oneline	View commit history
git revert	Undo a commit without deleting history
git push	Upload your branch

git init creates a brand-new repository. Here you use git clone because the lab repository already exists.