Beginner-Friendly Topic
Take your time - it's perfectly normal to re-read this topic 2-3 times. Try the interactive code editor below to run code yourself. Use the Q&A section to check your understanding before moving on. You've got this! 🚀
Git Fundamentals & Core Concepts
Git is the version control system that powers the entire DevOps toolchain. Every DevOps engineer must master Git deeply - it is the foundation of CI/CD pipelines, code review, and collaboration.
Git Core Concepts
Git tracks changes to files over time and enables collaboration. Core concepts: Repository (repo) - a project folder tracked by Git. Commit - a snapshot of your files at a point in time (like a save point). Branch - an independent line of work. Merge - combining changes from two branches. Remote - the hosted version of the repo (GitHub, GitLab). Working Directory → Staging Area → Local Repo → Remote Repo is the Git data flow.
Choose based on team size, release cadence, and deployment model
Essential Git Commands
# Initialize a new git repository
git init
# Clone an existing remote repository
git clone https://github.com/user/repo.git
# Check the current state of your working directory
git status
# Stage specific file(s) for the next commit
git add src/app.ts
git add . # Stage ALL changed files
# Commit staged changes with a message
git commit -m "feat: add user authentication module"
# View commit history (short format)
git log --oneline --graph --all
# See what changed between commits
git diff HEAD~1 HEAD
git diff --staged # What's staged but not committed
# Push commits to the remote repository
git push origin main
# Pull latest changes from remote
git pull origin main
# Undo last commit (keep changes in working dir)
git reset HEAD~1
# Stash uncommitted changes temporarily
git stash
git stash pop # Restore stashed changesQuick Quiz
Tip
Tip
Practice Git Fundamentals Core Concepts in small, isolated examples before integrating into larger projects. Breaking concepts into small experiments builds genuine understanding faster than reading alone.
Practice Task
Note
Practice Task - (1) Write a working example of Git Fundamentals Core Concepts from scratch without looking at notes. (2) Modify it to handle an edge case (empty input, null value, or error state). (3) Share your solution in the Priygop community for feedback.
Common Mistake
Warning
A common mistake with Git Fundamentals Core Concepts is skipping edge case testing - empty inputs, null values, and unexpected data types. Always validate boundary conditions to write robust, production-ready devops code.