Tools: 🚀 ErrGuard: A DevOps CLI That Explains Terminal Errors Using GitHub Copilot CLI

🧩 What I Built ## 🎬 Demo ## Real Example: Docker Build Failure ## 🤖 My Experience with GitHub Copilot CLI ## 🛠️ What I Learned ## 💡 Why ErrGuard Matters ## 🏁 Final Thoughts ## 🏷️ Tags GitHub Copilot CLI Challenge Submission This is a submission for the GitHub Copilot CLI Challenge As a DevOps learner, I spend most of my time inside the terminal. And like every beginner (and even experienced engineers), I frequently hit errors—Docker build failures, Git mistakes, Kubernetes connection issues, and permission problems. The usual flow looks like this: I wanted to fix this problem inside the terminal itself. That’s why I built ErrGuard. ErrGuard is a DevOps-focused CLI tool that wraps terminal commands and explains failures using GitHub Copilot CLI. If the command succeeds, ErrGuard stays silent. If it fails, ErrGuard: This turns terminal errors into learning moments. 🔗 GitHub Repository: https://github.com/yashsonawane25/errguard.git 📸 Screenshot Demo: First Image I ran the following command inside the ErrGuard directory: Docker failed because there was no Dockerfile in the directory. ErrGuard captured the real error output and passed it to GitHub Copilot CLI. Copilot analyzed the project context and returned a mentor-style explanation describing: All of this happened directly in the terminal, without switching to a browser. GitHub Copilot CLI is the core engine behind ErrGuard. Instead of using Copilot only for autocomplete or IDE suggestions, I used the new standalone Copilot CLI as an intelligent agent that reasons about: ErrGuard sends structured prompts to Copilot CLI in non-interactive mode: This significantly improved my debugging speed and helped me understand DevOps concepts more deeply. While building ErrGuard, I learned several real-world lessons: Adapting ErrGuard to these changes was an important part of the project. ErrGuard keeps you focused inside the terminal and turns errors into clear, actionable guidance. Building ErrGuard helped me experience GitHub Copilot CLI as part of a real DevOps workflow—not just a demo tool. Instead of fighting terminal errors, I now learn from them. Thanks for reading 🙌 #githubcopilot #cli #devops #automation #ai Templates let you quickly answer FAQs or store snippets for re-use. Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Hide child comments as well For further actions, you may consider blocking this person and/or reporting abuse COMMAND_BLOCK: docker build . Enter fullscreen mode Exit fullscreen mode COMMAND_BLOCK: docker build . COMMAND_BLOCK: docker build . CODE_BLOCK: errguard docker build . Enter fullscreen mode Exit fullscreen mode CODE_BLOCK: errguard docker build . CODE_BLOCK: errguard docker build . CODE_BLOCK: errguard docker build . Enter fullscreen mode Exit fullscreen mode CODE_BLOCK: errguard docker build . CODE_BLOCK: errguard docker build . CODE_BLOCK: copilot -p "Explain this terminal error and how to fix it" --allow-all Enter fullscreen mode Exit fullscreen mode CODE_BLOCK: copilot -p "Explain this terminal error and how to fix it" --allow-all CODE_BLOCK: copilot -p "Explain this terminal error and how to fix it" --allow-all - Run a command - See a confusing error - Copy the error - Open multiple Stack Overflow tabs - Lose time and context - Detects the failure - Captures the exact error output - Sends the error and command context to GitHub Copilot CLI - Returns a clear explanation: - What happened - Why it happened - What went wrong - Step-by-step fix - How to avoid it next time - Why Docker failed - What mistake was made - How to fix it - How to avoid the issue in the future - The command that failed - The actual error output - The current working directory - Inspects the directory - Understands the DevOps context - Explains the root cause - Suggests exact fixes - The older gh copilot extension was deprecated - GitHub introduced a new standalone Copilot CLI - Copilot CLI works best as an agent using prompts - Authentication and permissions matter in real CLI tools - Errors are frequent - Documentation is scattered - Context switching slows learning