GIT

Git Tutorial for Beginners

1. What is Git?

• Git is a distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
• It tracks changes to files, allowing multiple people to work on them simultaneously, coordinating their work seamlessly.

2. Installing Git

• Linux: Install via package manager (apt, yum, etc.).

  sudo apt-get install git  # Debian/Ubuntu
  sudo yum install git      # CentOS/Fedora

• Mac: Install Git using Homebrew or download from the Git website.

  brew install git         # Homebrew

• Windows: Download and install from Git for Windows.

3. Configuring Git

• Set your username and email address:

  git config --global user.name "Your Name"
  git config --global user.email "your.email@example.com"
  git --version # To confirm that git is installed and configured correctly on your machine

4. Creating a Git Repository

• Initialize a new Git repository:

  git init

5. Basic Git Workflow

• Checking Status:

  git status

• Adding Files:

  git add <filename>     # Stage specific file
  git add .              # Stage all files

• Committing Changes:

  git commit -m "Commit message"

6. Branching and Merging

• Creating a Branch:

  git branch <branch-name>
  git checkout <branch-name>   # Switch to the new branch

• Merging Branches:

  git checkout main           # Switch to main branch (or target branch)
  git merge <branch-name>     # Merge changes from <branch-name> into main

7. Remote Repositories (GitHub)

• Linking to a Remote Repository:

  git remote add origin <remote-url>   # Add a remote repository

• Pushing Changes:

  git push -u origin main     # Push local changes to the remote repository

• Pulling Changes:

  git pull origin main        # Pull latest changes from remote repository

8. Resolving Conflicts

• Conflict Resolution:
  • Edit conflicted files to resolve conflicts.
  • Add resolved files using git add and commit changes.

9. Git History and Log

• Viewing Commit History:

  git log                # View commit history
  git log --oneline      # Compact view of commit history

10. Additional Git Commands

• Undoing Changes:

  git reset HEAD <filename>   # Unstage changes
  git checkout -- <filename>  # Discard changes in working directory

• Git Help:

  git --help             # Git command help

11. Git Resources

• Official Git Documentation: Git SCM
• GitHub Guides: GitHub Docs
• Interactive Learning: Git - Learn