🚀 Learning Git

Git is a version control system that tracks changes in your codebase. You can edit README.md using Markdown or HTML.

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🧠 Git Commands Reference

# Check Git version
git --version

# Configure Git globally
git config --global user.name "My Name"
git config --global user.email "someone@email.com"

# Check current Git configuration
git config --list

# Start a Git repository
git init

# Clone a repository
git clone "repo-link"

# Link/unlink remote repository
git remote add origin "link"
git remote remove origin
git remote -v           # Verify remote repo

# Initializing a new project (Quick Guide)
echo "# learning-Git" >> README.md
git init
git add README.md
git commit -m "first commit"
git branch -M main
git remote add origin https://github.com/ssrthakkumar/learning-Git.git
git push -u origin main              # -u sets upstream

# Link an existing local folder to GitHub repo
git remote add origin https://github.com/ssrthakkumar/learning-Git.git
git branch -M main
git push -u origin main

# Track & commit changes
git status              # Show status of working directory
git add filename        # Stage a single file
git add .               # Stage all files
git commit -m "message" # Commit with message

# Push & pull changes
git push origin main    # Push to main branch
git pull origin main    # Pull from remote main branch

# Branching
git branch              # List branches
git branch -M main      # Rename current branch to main
git checkout -b new     # Create and switch to new branch
git checkout branch     # Switch to a branch
git branch -d branch    # Delete a branch
git push origin branch  # Push a branch to remote
git diff branch         # Compare with another branch
git merge branch        # Merge a branch into current one

# Merge Conflicts
# Happens when multiple branches edit the same part of a file.
# Git will prompt you to resolve it manually.

# Undoing Changes

# Reset staged files
git reset filename      # Unstage a specific file
git reset               # Unstage all files

# Undo commits
git reset HEAD~1                      # Undo last commit but keep changes
git reset <commit-hash>              # Reset to specific commit
git reset --hard <commit-hash>       # Reset and remove all changes after that

# File & directory operations
ls                                       # List files (linux or git bash on windows)
ls -a                                    # List all files including hidden (linux or git bash on windows)
dir                                      # list files and folders (windows and in vs code terminal)
dir /a                                   # include hidden files (windows and in vs code terminal)
cd folder-name                           # Move to a folder
cd ..                                    # Go back one directory
cd /                                     # Root directory
mkdir folder-name                        # Create a directory (folder)
' ' > filename                           # Creates a file
mkdir -p a/b/c                           # Create nested directories
Remove-Item fileName                     # Remove a file
Remove-Item folderName -Recurse -Force   #Removes a file or a directory
Remove-Item * -Recurse -Force            #Removes all files and directories(folders) from inside a directory(folder)
# NOTE - We can use rm in place or Remove-Item as an abbreviation