Command Playground: AI-Powered Platform to Learn, Practice & Master 105+ CLI Tools Online

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The command line is not going away. Whether you are deploying containers, managing infrastructure, pushing code, or automating workflows, the terminal remains the fastest and most precise way to get things done. But learning CLI commands has always had the same problem — you need to install tools, configure environments, and risk breaking things just to practice. Command Playground changes that. It is a free, browser-based platform built by TechnoScripts where you can learn, practice, and master commands for over 105+ CLI tools — from Git ... Read More

Build an AI Portfolio That Gets Interviews: GitHub, Kaggle

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Recruiters skim a stack of look-alike resumes; a link to shipped, evaluated work is what stops the scroll. An AI portfolio is that link, and the big AI employers say some version of the same thing on their careers pages: they hire on demonstrated, shipped work. If you followed this series, the projects already exist. This playbook turns that pile of repos into interviews. “Talk is cheap. Show me the code.” Linus Torvalds Last Updated: July 2026 | Tested on: ... Read More

RAG System Design: The LLM Interview Whiteboard Round

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RAG system design, short for Retrieval-Augmented Generation, is the GenAI whiteboard round where an interviewer says “design ChatPDF for an enterprise” and then watches how you think for forty-five minutes, not what you can draw. This post walks that round end to end: an eight-layer framework, two fully worked designs, the follow-up gauntlet on ACLs, freshness, and scale, and a mock transcript with the rubric, every number computed with real code. “They grade the numbers you defend, not the boxes ... Read More

ML System Design: Recommenders, Feature Stores, Skew

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Most interview rounds ask you to write a function; the ML system design round asks you to design a whole machine learning product out loud, and it is the stage that most often decides a senior offer. Given a vague goal like “recommend videos” or “catch fraud”, can you turn it into metrics, data, features, a model, a serving path, and monitoring? This post gives you a fixed skeleton, two fully worked designs, and a graded mock transcript. “Anyone can ... Read More