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Introduction to Git

1. What is Git?

Git is a distributed version control system that allows developers to track changes in code during software development. It enables multiple developers to work on the same project simultaneously without interfering with each other's work.

2. Why Use Git?

Using Git offers several advantages:

  • Collaboration: Multiple developers can work together seamlessly.
  • History: Git keeps a detailed history of all changes made to the codebase.
  • Branching: Developers can create branches to experiment with new features without affecting the main codebase.
  • Backup: Code can be backed up remotely, ensuring that it is safe from local failures.

3. Git Basics

Git works with repositories (repos), which are collections of files and directories. A Git repository can be local (on your computer) or remote (on a server).

Key Concepts:

  • Commit: A snapshot of your files at a certain point in time.
  • Branch: A separate line of development in your project.
  • Merge: Combining changes from different branches.
  • Remote: A version of your project that is hosted on the internet or another network.

4. Common Commands

Here are some common Git commands:

git init                            # Initialize a new Git repository
git clone               # Clone an existing repository
git add                           # Add a file to the staging area
git commit -m "Commit message"          # Commit changes
git status                              # Check the status of your repository
git push                # Push changes to a remote repository
git pull                # Pull changes from a remote repository
git branch                 # Create a new branch
git checkout               # Switch to a branch
git merge                  # Merge a branch into the current branch
                

5. Best Practices

Here are some best practices to follow when using Git:

  • Commit often with clear messages.
  • Use branches to isolate features and fixes.
  • Keep your commits focused on a single task.
  • Always pull from the remote repository before starting work.
  • Use .gitignore to exclude files that shouldn't be tracked.

6. FAQ

What is the difference between Git and GitHub?

Git is a version control system, while GitHub is a platform that hosts Git repositories online.

Can I use Git without GitHub?

Yes, Git can be used locally without any remote repositories. GitHub is just one of many platforms that support Git.

What is a pull request?

A pull request is a way to submit your changes to a project. It allows others to review your code before it is merged into the main branch.