The Manifest.
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Linux - LinkedIn Skill Assessments Quizzes with Answers
In this article, you will find LinkedIn Assessment, Questions and Answers for Linux.
JavaScript - LinkedIn Skill Assessments Quizzes with Answers
In this article, you will find LinkedIn Assessment, Questions and Answers for JavaScript.
How to Set Up SSH Keys for GitHub (All Platforms)
Generate an SSH key, add it to GitHub, and never type a password again. Step-by-step for Ubuntu, macOS, and Windows — including multiple accounts and troubleshooting.
How to Write a Production Dockerfile for Node.js
Build small, fast, production-ready Docker images for Node.js — layer caching, multi-stage builds, non-root user, health checks, and .dockerignore explained.
Docker Compose in Production: What You Need to Know
Running Docker Compose in production is different from dev. Here's what to change — health checks, restart policies, secrets, logging, networking, and resource limits — before you ship.
How to Set Up a .env File and Stop Leaking Secrets
What .env files are, how to load them in Node.js, Python, and Docker, the common mistakes that expose API keys, and how to manage secrets safely in production.
How to Run PostgreSQL Locally with Docker
Run a full PostgreSQL database locally in under 2 minutes using Docker — with persistent volumes, docker-compose setup, GUI client access, and dump/restore commands.
How to Install VS Code on Ubuntu, macOS and Windows
Install Visual Studio Code on any OS using apt, Snap, Homebrew, or winget — with the essential extensions every developer should add first.
How to Install Python on Ubuntu, macOS and Windows
Install Python 3 using pyenv, Homebrew, or the official installer — step-by-step for Ubuntu, macOS, and Windows. Includes pip, virtual environments, and version switching.
Python Virtual Environments: venv, uv, and When to Use Each
Virtual environments keep your Python projects isolated — separate dependencies, separate Python versions, no conflicts. Here's how to set them up with venv and uv, and which to use in 2026.
How to Install Node.js on Ubuntu, macOS and Windows
Install Node.js using nvm, Homebrew, or the official installer — step-by-step for Ubuntu, macOS, and Windows. Includes switching versions and verifying your install.
How to Install Git on Ubuntu, macOS and Windows
Install Git on any operating system — apt, Homebrew, or the official installer — plus first-time configuration, SSH setup, and verifying your install.
Vim Cheat Sheet: Modes, Navigation, Editing & Config
Complete Vim reference covering modes, movement, editing commands, search and replace, visual mode, split panes, macros, text objects, and a starter .vimrc.
How to Exit Vim, Vi, and Nano (Step by Step)
Stuck in Vim? Here is exactly how to save and exit, quit without saving, and force-quit Vim, Vi, and Nano — with every command you need and why they work.
Git Worktree: Work on Two Branches at the Same Time
Stop stashing mid-feature to fix a hotfix. Git worktree lets you check out multiple branches into separate folders from the same repo — with real scenarios and examples.
How to Debug a Slow SQL Query in PostgreSQL
Step-by-step: find slow queries with pg_stat_statements, read EXPLAIN ANALYZE output, identify missing indexes, fix N+1 queries, and diagnose lock contention.
How to Get Your Dart Version from the Command Line
Learn the quick way to check your Dart SDK version on Windows, macOS, or Linux using the `dart --version` command.
Unsigned Columns in Laravel Migrations
How to declare unsigned integer columns in Laravel migrations using unsignedBigInteger(), foreignId(), and the unsigned() modifier. Updated for Laravel 12.
SSH & GPG Cheat Sheet: Keys, Tunnels & Signed Commits
Complete SSH and GPG reference — key generation, ssh-agent, config file aliases, port forwarding, database tunneling, GPG signing, and signed git commits.
TypeScript Cheat Sheet: Types, Generics & Utility Types
Complete TypeScript reference — primitive types, interfaces, generics, utility types like Partial, Pick and Omit, type guards, as const, mapped types, and tsconfig options.
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