SHA-1 hashing concept in Git - Mini Project: Build & Apply

SHA-1 Hashing Concept with Git

📖 Scenario: You are learning how Git uses SHA-1 hashes to identify commits uniquely. This helps Git track changes safely and efficiently.

🎯 Goal: You will create a simple text file, configure Git user info, commit the file, and then view the SHA-1 hash of the commit to understand how Git generates it.

📋 What You'll Learn

Create a file named example.txt with exact content Hello Git SHA-1

Configure Git user name as Test User and email as [e-mail]

Add and commit the file with message Initial commit

Display the SHA-1 hash of the latest commit using git log

💡 Why This Matters

🌍 Real World

Git uses SHA-1 hashes to track every change in a project safely. This helps developers collaborate without conflicts.

💼 Career

Understanding SHA-1 hashes in Git is essential for software developers and DevOps engineers to manage code versions and troubleshoot issues.

1

Create the file with exact content

Create a file named example.txt with the exact content Hello Git SHA-1.

Git

# Create the file example.txt with the exact content
# Your code here

Need a hint?

Use the echo command to write text into a file.

2

Configure Git user name and email

Configure Git user name as Test User and email as [e-mail] using git config commands.

Git

echo "Hello Git SHA-1" > example.txt
# Configure Git user name and email below
# Your code here

Need a hint?

Use git config user.name "Your Name" and git config user.email "[e-mail]".

3

Add and commit the file

Initialize a new Git repository using git init, add example.txt to Git staging area using git add example.txt and commit it with message Initial commit using git commit -m "Initial commit".

Git

echo "Hello Git SHA-1" > example.txt
git config user.name "Test User"
git config user.email "[e-mail]"
# Initialize the repository, add example.txt and commit with message "Initial commit"
# Your code here

Need a hint?

Use git init to initialize a repository, git add to stage files and git commit -m "message" to commit.

4

Display the SHA-1 hash of the latest commit

Use git log -1 --format=%H to display the SHA-1 hash of the latest commit.

Git

echo "Hello Git SHA-1" > example.txt
git config user.name "Test User"
git config user.email "[e-mail]"
git init
git add example.txt
git commit -m "Initial commit"
# Display the SHA-1 hash of the latest commit
# Your code here

Need a hint?

The command git log -1 --format=%H shows the full SHA-1 hash of the latest commit.