Undo the Last Commit

Introduction

Git is a powerful version control system that allows developers to track changes made to their codebase. One of the most common tasks in Git is undoing a commit. This lab will teach you how to undo the last commit without rewriting history.

Undo the Last Commit

You have just committed changes to your Git repository, but you realize that you made a mistake. You want to undo the last commit without losing any of the changes you made. How can you do this?

For this lab, let's use the repository from https://github.com/labex-labs/git-playground. Follow these steps:

1. Clone the repository, navigate to the directory and configure the identity:

git clone https://github.com/labex-labs/git-playground
cd git-playground
git config --global user.name "your-username"
git config --global user.email "your-email"

2. Check the commit history:

git log

3. Undo the last commit, creating a new commit with the inverse of the commit's changes:

git revert HEAD

4. Check the commit history again:

git log

This is the result of running the git log --oneline command:

532b49b (HEAD -> master) Revert "Added file2.txt"
d22f46b (origin/master, origin/HEAD) Added file2.txt
cf80005 Added file1.txt
b00b937 Initial commit

Summary

Congratulations! You have successfully completed the lab to undo the last commit in Git. Remember that git revert HEAD is a powerful tool that allows you to undo changes without losing any of the work you have done. Keep practicing and exploring Git to become a Git expert.