Tagging specific commits in Git - Mini Project: Build & Apply

Tagging Specific Commits in Git

📖 Scenario: You are working on a project using Git for version control. You want to mark important points in your project's history by tagging specific commits. This helps you easily find those commits later, like marking chapters in a book.

🎯 Goal: Learn how to create a Git repository, make commits, add tags to specific commits, and list those tags.

📋 What You'll Learn

Create a Git repository

Make at least two commits

Tag a specific commit with a meaningful name

List all tags to verify

💡 Why This Matters

🌍 Real World

Tagging commits helps mark important versions like releases or milestones in software projects.

💼 Career

Knowing how to tag commits is essential for software developers and DevOps engineers to manage project versions and releases.

1

Initialize Git repository and create first commit

Initialize a new Git repository in the current folder using git init. Then create a file named file.txt with the text Hello World. Add this file to Git and commit it with the message Initial commit using git add file.txt and git commit -m "Initial commit".

Git

# Initialize Git repository and create first commit
# Your code here

Need a hint?

Use git init to start the repository. Use echo to create the file. Then add and commit.

2

Create a second commit

Create a second commit by appending the text More content to file.txt. Then add and commit the changes with the message Second commit using git add file.txt and git commit -m "Second commit".

Git

git init

echo "Hello World" > file.txt
git add file.txt
git commit -m "Initial commit"
# Append text to file.txt and create second commit
# Your code here

Need a hint?

Use >> to append text to the file. Then add and commit again.

3

Tag the first commit

Create a tag named v1.0 on the first commit. Use git tag v1.0 <commit-hash> where <commit-hash> is the hash of the first commit. Find the first commit hash using git log --reverse --format=%H and use it in the tag command.

Git

git init

echo "Hello World" > file.txt
git add file.txt
git commit -m "Initial commit"

echo "More content" >> file.txt
git add file.txt
git commit -m "Second commit"
# Tag the first commit with 'v1.0'
# Your code here

Need a hint?

Use git log --reverse --format=%H to get commits from oldest to newest. Use head -n 1 to get the first commit hash.

4

List all tags to verify

List all tags in the repository using git tag to verify that the tag v1.0 exists.

Git

git init

echo "Hello World" > file.txt
git add file.txt
git commit -m "Initial commit"

echo "More content" >> file.txt
git add file.txt
git commit -m "Second commit"

first_commit_hash=$(git log --reverse --format=%H | head -n 1)
git tag v1.0 $first_commit_hash
# List all tags below
# Your code here

Need a hint?

Use git tag to see all tags.