Configure

# Config username and email
git config --global user.name jdoe
git config --global user.email john.doe@example.com

# To avoid detected dubious ownership warning
git config --global --add safe.directory "*"

Initialize Repository

git init                     # Create a new Git repository
git clone <url>              # Clone an existing repository

Working with Changes

git status                   # Show the working directory status
git add -A                   # Stage all changes
git add <file>               # Stage a specific file
git reset                    # Unstage all files (keep changes)
git reset <file>             # Unstage a specific file
git mv <source> <dest>       # Rename file
git checkout -- <file>       # Revert local file changes

# Revert changes on single file to previous commit
git checkout <commit-hash> <file>

# Revert changes made by specified commit
git revert <commit-hash>

Commit & History

git commit -m "Message"       # Commit with a message
git log                       # View commit history
git log --oneline             # Compact log view
git log -3 --name-status      # Last 3 changes with file names
git log --follow -p -- <file> # Follow file history

Blame

# Blame from line X to Y
git blame -L X,Y <file>

# Show changes on a file from a specified commit
git show <commit-hash> -- <file>

Push & Pull

git push origin <branch>    # Push changes to the remote branch
git push origin -u <branch> # Push new branch
git pull                    # Fetch and merge changes from remote
git fetch --all             # Fetch all from remote

# Delete branch from remote
git push origin --delete <branch>

Patching

# Patch from uncommitted changes
git diff > changes.patch

# Patch from changes between two commits
git diff commit1 commit2 > changes.patch

Branching

git branch                 # List all branches
git branch <name>          # Create a new branch
git branch -d <name>       # Delete a branch
git checkout <branch>      # Switch to a branch
git checkout -b <name>     # Create and switch to a new branch
git merge <branch>         # Merge a branch into the current one

Tagging

git tag <name>             # Create new tag
git push origin --tags     # Push tags to remote

# Tag with current date / time
git tag PUB_$(date -Format 'yyMMdd')
git tag PUB_$(date -Format 'yyMMdd-HHmm')

Undoing Changes

git restore <file>           # Discard changes in a file
git reset --hard             # Discard all uncommitted changes

Remote Repositories

git remote -v                # Show remote repositories
git remote add origin <url>  # Add a remote repository
git remote rm origin         # Remove a remote repository