Have you ever wondered how Git actually works under the hood? What really happens when you run `git init`? 🤔 I built a Git clone in Go from scratch to understand how Git actually works. Trunk is a functional Git core written in Go that directly reads and writes the .git directory instead of shelling out to Git. While building it, I dug into Git’s internals and learned how its object model, refs, and plumbing commands really operate under the hood. Here's what I discovered: Key Learnings: 1️⃣ Git is a Content-Addressable Storage System Git isn't a "diff engine" - it's essentially a key-value database where every piece of content gets a unique SHA-1 hash as its key. 2️⃣ Commits are Full Snapshots, Not Diffs Contrary to popular belief, each commit stores the ENTIRE state of your project. Git optimizes this through compression and deduplication - identical files across commits share the same storage. 3️⃣ The Merkle Tree Architecture Git uses a Merkle tree structure where: - Blobs store file content (no filenames!) - Trees represent directories (mapping names to hashes) - Commits link trees with metadata - Any change propagates up: file → tree → root tree → commit 4️⃣ Clever Object Storage Objects are stored in `.git/objects/` using a smart scheme: - First 2 characters of the hash = directory name - Remaining 38 characters = filename - All compressed with zlib 5️⃣ Branches Are Just Pointers A branch is simply a lightweight pointer to a commit hash. That's why creating branches is so cheap! 💻 The Implementation: I built both plumbing (low-level) and porcelain (high-level) commands: - Plumbing: hash-object, cat-file, update-index, write-tree, commit-tree - Porcelain: commit, log The project is compatible with standard Git repositories, reinforcing the idea that Git is fundamentally clever file organization plus cryptographic hashing. Check out the full implementation on GitHub: https://lnkd.in/g6AG2js5 #Git #SoftwareEngineering #OpenSource #VersionControl #Golang #DevOps #Programming #TechEducation #ComputerScience
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Be honest… how many of these Git mistakes have you made? 👇 Every developer says they “know Git.” Until production breaks. Here are 15 Git mistakes developers still make 👇 1️⃣ Force pushing to main 2️⃣ Committing .env files 3️⃣ Pushing API keys to GitHub 4️⃣ Writing commit messages like “final_final_v2” 5️⃣ Huge commits with 100+ file changes 6️⃣ Not pulling before pushing 7️⃣ Working directly on main 8️⃣ Ignoring .gitignore 9️⃣ Panicking during merge conflicts 🔟 Using git reset --hard blindly 1️⃣1️⃣ Detached HEAD confusion 1️⃣2️⃣ Never using git rebase 1️⃣3️⃣ Skipping proper PR reviews 1️⃣4️⃣ No tags for releases 1️⃣5️⃣ Messy commit history nobody understands Git is simple. Until it isn’t. The difference between a junior and senior developer? 👉 Clean commits 👉 Safe branching 👉 Knowing how to recover from mistakes I’ll go first — I once force pushed to main in a shared repo 😅 Your turn. What’s your biggest Git mistake? #git #github #programming #developer #devops #softwareengineering #coding #webdevelopment #tech #learncoding
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Most developers use Git every day. Few truly understand how it works. Git isn’t a collection of commands — it’s a graph of snapshots and pointers. When you understand: • Commits are snapshots • Branches are movable labels • HEAD is just a pointer • Reset, Revert, and Rebase manipulate the graph Git stops being confusing — and starts being predictable. I’ve written a concise breakdown of Git’s internal model in simple terms. #Git #SoftwareEngineering #Programming #Developers
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Most developers use Git every day. But only a few actually understand its power. Here are 15 Git commands every developer should master 👇 1. git init Initialize a new Git repository. 2. git clone <repo_url> Copy an existing repository from GitHub to your local machine. 3. git status Shows modified, staged, and untracked files. 4. git add <file> Adds a file to the staging area. 5. git add . Adds all changed files to staging. 6. git commit -m "message" Creates a snapshot of your staged changes. 7. git push Uploads your commits to remote repository. 8. git pull Fetches and merges latest changes from remote. 9. git fetch Downloads latest changes without merging. Safer than pull when reviewing changes. 10. git branch Lists or creates branches. 11. git checkout <branch> Switch to another branch. 12. git checkout -b <branch> Create and switch to new branch instantly. 13. git merge <branch> Merge another branch into current branch. 14. git log Shows commit history. Helps understand who changed what. 15. git reset --hard HEAD Undo changes and reset to last commit. Use carefully ⚠️ Git was created by and powers modern development on platforms like . If you master these 15 commands, you’re already ahead of 80% of developers. Save this post. You’ll need it later. Which Git command do you use the most? 👇 #git #github #programming #developer #softwareengineering #coding #devops #webdevelopment #tech #learncodingIf
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Most developers use Git every day. But only a few actually understand its power. Here are 15 Git commands every developer should master 👇 1. git init Initialize a new Git repository. 2. git clone <repo_url> Copy an existing repository from GitHub to your local machine. 3. git status Shows modified, staged, and untracked files. 4. git add <file> Adds a file to the staging area. 5. git add . Adds all changed files to staging. 6. git commit -m "message" Creates a snapshot of your staged changes. 7. git push Uploads your commits to remote repository. 8. git pull Fetches and merges latest changes from remote. 9. git fetch Downloads latest changes without merging. Safer than pull when reviewing changes. 10. git branch Lists or creates branches. 11. git checkout <branch> Switch to another branch. 12. git checkout -b <branch> Create and switch to new branch instantly. 13. git merge <branch> Merge another branch into current branch. 14. git log Shows commit history. Helps understand who changed what. 15. git reset --hard HEAD Undo changes and reset to last commit. Use carefully ⚠️ Git was created by and powers modern development on platforms like . If you master these 15 commands, you’re already ahead of 80% of developers. Save this post. You’ll need it later. Which Git command do you use the most? 👇 #git #github #programming #developer #softwareengineering #coding #devops #webdevelopment #tech #learncodingIf
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Most developers use Git every day. But only a few actually understand its power. Here are 15 Git commands every developer should master 👇 1. git init Initialize a new Git repository. 2. git clone <repo_url> Copy an existing repository from GitHub to your local machine. 3. git status Shows modified, staged, and untracked files. 4. git add <file> Adds a file to the staging area. 5. git add . Adds all changed files to staging. 6. git commit -m "message" Creates a snapshot of your staged changes. 7. git push Uploads your commits to remote repository. 8. git pull Fetches and merges latest changes from remote. 9. git fetch Downloads latest changes without merging. Safer than pull when reviewing changes. 10. git branch Lists or creates branches. 11. git checkout <branch> Switch to another branch. 12. git checkout -b <branch> Create and switch to new branch instantly. 13. git merge <branch> Merge another branch into current branch. 14. git log Shows commit history. Helps understand who changed what. 15. git reset --hard HEAD Undo changes and reset to last commit. Use carefully ⚠️ Git was created by and powers modern development on platforms like . If you master these 15 commands, you’re already ahead of 80% of developers. Save this post. You’ll need it later. Which Git command do you use the most? 👇 #git #github #programming #developer #softwareengineering #coding #devops #webdevelopment #tech #learncodingIf
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🚦 git pull vs git pull --rebase — which one should you use? Use rebase for tidy feature-branch history. use merge when you want an explicit record of integration. 🔍 Why git pull = git fetch + git merge → Preserves full history → Creates a merge commit → Shows when branches were integrated git pull --rebase = git fetch + git rebase → Rewrites your local commits onto the latest remote tip → Produces a clean, linear history → Avoids unnecessary merge commits ⚙️ How git pull --rebase → Keeps history linear and reduces noise. → If conflicts occur- # Fix conflicts in files git add <file> git rebase --continue → If something looks wrong: git rebase --abort → This safely restores your branch to the pre-rebase state. → You can then fall back to: git pull 🏆 Golden Rule Private branch → Rebase Shared/Public branch → Merge Keep history clean. Do not rewrite others’ work. Resolve conflicts deliberately. Ship clean code. 🔧 #git #gitworkflow #versioncontrol #gitrebase #devtips #programming #opensource #softwareengineering #devops #coding
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𝐆𝐢𝐭 𝐜𝐨𝐦𝐦𝐚𝐧𝐝𝐬 𝐂𝐡𝐞𝐚𝐭 𝐒𝐡𝐞𝐞𝐭 Git is a version control system that allows you to track changes to your code over time. It's essential for any software developer to know how to use Git. Here is a cheatsheet of some of the most common Git commands : - 𝐠𝐢𝐭 𝐚𝐝𝐝: Stages a file or directory for commit. - 𝐠𝐢𝐭 𝐜𝐨𝐦𝐦𝐢𝐭: Commits staged changes to the local repository. - 𝐠𝐢𝐭 𝐥𝐨𝐠: Shows a history of all commits made to the local repository. - 𝐠𝐢𝐭 𝐜𝐡𝐞𝐜𝐤𝐨𝐮𝐭: Switches to a different branch or commit. - 𝐠𝐢𝐭 𝐛𝐫𝐚𝐧𝐜𝐡: Creates, lists, and deletes branches. - 𝐠𝐢𝐭 𝐟𝐞𝐭𝐜𝐡: Downloads all changes from the remote repository. - 𝐠𝐢𝐭 𝐩𝐮𝐥𝐥: Fetches changes from the remote repository and merges them into the local branch. - 𝐠𝐢𝐭 𝐩𝐮𝐬𝐡: Uploads committed changes to the remote repository. - 𝐠𝐢𝐭 𝐦𝐞𝐫𝐠𝐞: Merges two branches together. - 𝐠𝐢𝐭 𝐫𝐞𝐛𝐚𝐬𝐞: Replays commits from one branch onto another. - 𝐠𝐢𝐭 𝐫𝐞𝐯𝐞𝐫𝐭: Reverses the changes made in a commit. This is just a basic overview of Git commands. There's much more to learn, but this should give you a good starting point. ♻ Repost if you find it valuable! #Git #GitCommands #VersionControl #GitWorkflow #GitTips #GitHub #GitLab #SoftwareDevelopment #SoftwareEngineering #WebDeveloper #FullStackDeveloper #BackendDeveloper #Coding #Programming
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git commit -m "WORKING VERSION BEFORE REFACTOR - DO NOT DELETE" I typed this at midnight before attempting a "quick refactor." 3 hours later, nothing worked. Code was completely broken. But I had that commit. git reset --hard [that commit hash] Everything back. Crisis averted. The next morning: My manager asked me to demo the feature. It worked perfectly. He never knew I'd completely destroyed it 6 hours earlier. What this taught me: Git isn't just version control. It's a time machine for when you break everything. The commits that have saved me: "Last working version before experimental changes" "Everything works, about to try something stupid" "Backup before client demo" "This works, don't know why, committing anyway" My commit rules now: → Commit before any risky change → Commit when something finally works (even if messy) → Commit before trying "one quick thing" → Commit at end of day (so I can time-travel tomorrow) The magic commands everyone should know: git reflog - See EVERYTHING you've done git reset --hard [hash] - Go back in time git stash - Hide your mess temporarily git commit -am "Saving this mess" - Quick save The scariest moment: When you realize you need a commit from yesterday, but you didn't make one. That panic is unforgettable. Now I commit obsessively: Broken code? Commit. Working code? Commit. Unsure? Commit anyway. Better to have 100 commits you don't need than missing the one you do. The real lesson: Your past self can save your future self. But only if your past self made a commit. Be honest: What's the longest you've gone without committing? (My record is 8 hours. Never again.) #Git #VersionControl #Programming #DeveloperTips
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🚀 Day 6 – Git & GitHub Series | Reverting & Resetting (Undo Like a Pro) Let’s be honest… Every developer has done this at least once: 👉 committed wrong code 👉 deleted a file by mistake 👉 pushed something broken 👉 or thought “How do I go back now?!” 😅 That’s where Git recovery commands save your life. Because in real projects, it’s not about never making mistakes — it’s about fixing them safely and fast. 🔹 Must-know Undo Commands ✅ Move HEAD but keep changes git reset --soft <commit_id> ✅ Unstage changes git reset --mixed <commit_id> ✅ Reset everything (⚠ dangerous) git reset --hard <commit_id> ✅ Safely undo via new commit (team-friendly) git revert <commit_id> ✅ Restore files git restore <file> ✅ Remove from staging git restore --staged <file> ✅ Clean unwanted files git clean -f git clean -fd 💡 Real-world rule I follow ✔ Working alone → reset ✔ Working in team/shared repo → revert ✔ Avoid --hard unless 100% sure ✔ Always double-check before cleaning Small knowledge → Huge time saved during production issues. 📌 This is Day 6 of my Git Mastery Series Daily practical Git + GitHub tips for Developers, DevOps & SREs. If you’re serious about leveling up your engineering skills: 👉 Follow for the next post #Git #GitHub #DevOps #SRE #VersionControl #SoftwareEngineering #Developers #ProgrammingLife #TechLearning #CloudComputing #Debugging #OpenSource #CareerGrowth #LearnInPublic
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Most developers know Git. Very few actually use it properly. Here are 15 Git mistakes developers STILL make in 2026 👇 1. Committing directly to main 2. Huge “final_final_v2” commits 3. Writing messages like “fix” 4. Force pushing blindly 5. Not pulling before push 6. Ignoring .gitignore 7. Rebasing without understanding it 8. Not reviewing diffs before commit 9. Merging without running tests 10. Using git reset randomly 11. Not tagging releases 12. Keeping dead branches forever 13. Leaving secrets in the repo 14. Ignoring Git hooks 15. Not learning reflog (your lifesaver) The scary part? Most production disasters don’t happen because of coding bugs. They happen because of bad Git practices. Senior engineers aren’t better because they code more. They’re better because they don’t break history. If you’ve made 5+ of these mistakes… You’re normal. If you’ve made 10+… It’s time to level up. 🔖 Save this before your next merge. 💬 Comment “GIT” if you want advanced Git workflows next. #Git #SoftwareEngineering #Developers #Programming #DevOps #TechCareers
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