GitHub — Full Install & Usage Guide with All Commands

sudo pacman -S git

sudo apt update
sudo apt install git -y

sudo dnf install git -y

# Xcode Command Line Tools (includes Git)
xcode-select --install

# Or via Homebrew
brew install git

git --version
# git version 2.43.0

git config --global user.name "Aayrix"
git config --global user.email "your.email@example.com"

# Set default branch name
git config --global init.defaultBranch main

# Set default editor
git config --global core.editor vim

# Enable colored output
git config --global color.ui auto

# View all config
git config --list

# Generate Ed25519 key (recommended)
ssh-keygen -t ed25519 -C "your.email@example.com"

# Press Enter to accept default path (~/.ssh/id_ed25519)
# Enter a passphrase (optional but recommended)

# Start SSH agent
eval "$(ssh-agent -s)"

# Add key to agent
ssh-add ~/.ssh/id_ed25519

# Copy public key to clipboard
cat ~/.ssh/id_ed25519.pub

ssh -T git@github.com
# Hi aayrix! You've successfully authenticated...

# Cache credentials for 8 hours
git config --global credential.helper cache

# Or store permanently (less secure)
git config --global credential.helper store

# Use a Personal Access Token instead of password
# Create at: https://github.com/settings/tokens

# Install gh (see GitHub CLI guide)
gh auth login
gh auth setup-git

# SSH
git clone git@github.com:aayrix/my-blog.git

# HTTPS
git clone https://github.com/aayrix/my-blog.git

# Clone into specific folder
git clone git@github.com:aayrix/my-blog.git my-blog
cd my-blog

# Create project folder
mkdir my-project && cd my-project

# Initialize Git
git init

# Create a README
echo "# My Project" > README.md

# Stage and commit
git add README.md
git commit -m "Initial commit"

# Create repo on GitHub and push
gh repo create my-project --public --source=. --remote=origin --push

# Or manually add remote
git remote add origin git@github.com:aayrix/my-project.git
git push -u origin main

# Check status of your files
git status

# See what changed
git diff

# Stage specific files
git add README.md
git add src/main.py

# Stage all changes
git add .

# Commit with message
git commit -m "Add user authentication feature"

# Push to GitHub
git push

# Pull latest changes
git pull

# Compact log
git log --oneline

# Last 5 commits
git log --oneline -5

# Show a specific commit
git show abc1234

# Discard unstaged changes to a file
git checkout -- filename.txt

# Unstage a file (keep changes)
git reset HEAD filename.txt

# Amend last commit message
git commit --amend -m "Better commit message"

# Undo last commit (keep changes staged)
git reset --soft HEAD~1

# List branches
git branch

# Create and switch to new branch
git checkout -b feature/login-page

# Or (Git 2.23+)
git switch -c feature/login-page

# Switch to existing branch
git switch main

# Merge branch into current branch
git merge feature/login-page

# Delete branch after merge
git branch -d feature/login-page

# Push branch to GitHub
git push -u origin feature/login-page

# Save work in progress
git stash

# List stashes
git stash list

# Apply and remove stash
git stash pop

# Apply without removing
git stash apply

# View remotes
git remote -v

# Add a remote
git remote add origin git@github.com:aayrix/my-project.git

# Change remote URL
git remote set-url origin git@github.com:aayrix/new-name.git

# Fetch without merging
git fetch origin

# Pull with rebase (cleaner history)
git pull --rebase origin main

# Push to specific branch
git push origin feature/my-branch

# Force push (use carefully!)
git push --force-with-lease origin main

# Fork a repo (via gh CLI)
gh repo fork torvalds/linux --clone=true
cd linux

# Add upstream remote
git remote add upstream git@github.com:torvalds/linux.git

# Sync with upstream
git fetch upstream
git checkout main
git merge upstream/main
git push origin main

# Create PR via CLI
gh pr create --title "Fix typo in README" --body "Fixed spelling error"

# List PRs
gh pr list

# Review PR
gh pr review 5 --approve

# Create issue
gh issue create --title "Add dark mode" --label enhancement

# List issues
gh issue list --state open

# Enable Pages for a repo
gh api repos/aayrix/aayrix.github.io/pages -X POST \
  -f build_type=workflow \
  -f source[branch]=master \
  -f source[path]=/

# ─── Setup ───────────────────────────────────
git config --global user.name "Your Name"
git config --global user.email "you@email.com"

# ─── Create & Clone ──────────────────────────
git init
git clone git@github.com:user/repo.git

# ─── Daily Workflow ──────────────────────────
git status
git add .
git commit -m "message"
git push
git pull

# ─── Branches ────────────────────────────────
git branch                    # list branches
git switch -c new-branch      # create + switch
git merge branch-name         # merge branch
git branch -d branch-name     # delete branch

# ─── History ─────────────────────────────────
git log --oneline
git diff
git show <commit>

# ─── Remote ──────────────────────────────────
git remote -v
git fetch
git pull --rebase

# ─── Undo ────────────────────────────────────
git checkout -- file          # discard changes
git reset HEAD file           # unstage
git stash                     # save for later
git commit --amend            # fix last commit

# ─── Tags ────────────────────────────────────
git tag v1.0.0
git push origin v1.0.0