Cheat Sheets.
Dense reference tables for Git, Vim, Linux, Docker, Claude, OpenAI, Gemini, and more — bookmark and come back.
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.
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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Dense reference tables for Git, Vim, Linux, Docker, Claude, OpenAI, Gemini, and more — bookmark and come back.
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