#Developer Tools.
30 posts filed under this topic.
curl Cheat Sheet: API Testing, Auth & File Upload
Complete curl reference — GET and POST requests, headers, authentication, file upload, response inspection, timing breakdown, webhook testing, and scripting patterns.
Linux & Bash Cheat Sheet: Commands Every Dev Needs
Complete Linux and Bash reference — file operations, permissions, processes, grep, find, networking, pipes, cron jobs, SSH, and shell scripting.
OpenAI API Cheat Sheet: GPT-4o, Tools & Assistants
Complete OpenAI reference — GPT-4o and o-series models, chat completions, function calling, structured output, Assistants API, embeddings, DALL-E 3, and Whisper.
Gemini API Cheat Sheet: 2.5 Pro, Vision & Grounding
Complete Google Gemini reference — Gemini 2.5 Pro and Flash models, generateContent, streaming, vision, JSON output, function calling, Search grounding, and Gemini CLI.
PostgreSQL Cheat Sheet: SQL, Indexes, EXPLAIN & psql
Complete PostgreSQL reference — psql commands, CRUD queries, joins, indexes, EXPLAIN ANALYZE, CTEs, window functions, JSONB operators, and admin queries.
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.
Git Cheat Sheet: Every Command You Actually Need
Complete Git reference with copy-paste commands for setup, staging, branching, merging, rebasing, stashing, undoing mistakes, remotes, and log inspection.
Docker Cheat Sheet: Images, Containers, Compose & More
Complete Docker reference — pulling images, running containers, volumes, networks, exec, logs, Docker Compose commands, Dockerfile tips, and disk cleanup.
Regex Cheat Sheet: Patterns, Groups & Real Examples
Complete regular expressions reference — anchors, character classes, quantifiers, named groups, lookaheads, lookbehinds, and real-world patterns for email, URL, and passwords.
Claude API Cheat Sheet: SDK, CLI, MCP & Prompting
Complete Claude reference — Anthropic API, model IDs, Messages API params, Claude Code CLI commands, MCP setup, tool use, prompt caching, and Batch API.
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.
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.
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.
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 Docker on Ubuntu, macOS and Windows
Install Docker Desktop or Docker Engine step-by-step on Ubuntu, macOS, and Windows — including post-install setup, running your first container, and Docker Compose.
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 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.
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.
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 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 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 Desktop Was Killing My Laptop. Here Is What Fixed It.
Docker Desktop using 6GB RAM and spinning the fan constantly. A few targeted config changes — memory caps, layer caching, dev vs prod images — fixed it completely.
I Used Claude to Review My Code for a Week. Here Is What It Caught.
A week-long experiment using Claude as a daily code reviewer on a real Node.js project — bugs found, security issues caught, where it was wrong, and what changed.
Claude Code vs Cursor: Which One Actually Helps You Ship?
A real comparison of Claude Code and Cursor from a developer who uses both — what each one is actually good at, where they frustrate you, and how to decide.
How Junior Engineers Should Actually Use Claude Code
Not a shortcut — a safety net. How to use Claude Code to learn faster, catch mistakes early, and ship better code without becoming dependent on AI for thinking.
Claude vs ChatGPT for Developers: An Honest Look
Not a benchmark chart. A real developer's honest take on when Claude works better than ChatGPT, when it doesn't, and what actually matters when choosing between them.
I Deleted My Code with git reset --hard. git reflog Saved It.
True story: running git reset --hard on the wrong branch wiped a week of work. Here is how git reflog recovered it all — and the guardrails I set up after.
Claude vs Gemini 2.5 for Coding: Honest Comparison
Hands-on comparison of Claude Sonnet 4.6 vs Gemini 2.5 Pro for real coding tasks — debugging, code review, test writing, long context, and daily workflow integration.