Cheat Sheets
Fast, scannable reference tables for the syntax you look up again and again — regex, Git, Bash, Docker, SQL, Python, YAML, CSS, and more. No fluff, just the commands and what they do.
Languages
Regex Cheat Sheet
A quick reference for regular expression syntax: character classes, anchors, quantifiers, groups, lookaround, and flags, with examples.
40 entriesMarkdown Cheat Sheet
A quick Markdown syntax reference: headings, emphasis, lists, links, images, code blocks, tables, and GitHub Flavored Markdown extras.
27 entriesSQL Cheat Sheet
A SQL quick reference: selecting, filtering, joins, aggregation, inserting and updating data, and table management.
30 entriesJS Arrays Cheat Sheet
A reference for JavaScript array methods: adding and removing, iterating, transforming, searching, sorting, and testing.
30 entriesTypeScript Cheat Sheet
A TypeScript reference: basic types, interfaces, functions, unions, generics, and the built-in utility types.
31 entriesJS Strings Cheat Sheet
A quick reference for JavaScript string methods: searching, extracting, transforming, splitting, padding, and trimming.
38 entriesPython Cheat Sheet
A Python 3 quick reference: strings, lists, dicts, comprehensions, control flow, functions, classes, files, and exceptions.
47 entriesYAML Cheat Sheet
YAML syntax at a glance: mappings, lists, strings and quoting, multi-line blocks, anchors and aliases, multiple documents, and gotchas.
25 entriesPostgreSQL Cheat Sheet
psql meta-commands, PostgreSQL data types, JSONB operators, upserts, RETURNING, window functions, indexes, and admin queries.
40 entriesReact Hooks Cheat Sheet
A quick reference for React hooks: state, effects, refs, context, memoisation, transitions, and the rules of hooks.
29 entriesGo Cheat Sheet
A Go quick reference: variables, types, slices and maps, control flow, functions and errors, structs and interfaces, goroutines, and the go tool.
38 entriesTools
Git Cheat Sheet
A quick reference of the Git commands you use most: staging, committing, branching, merging, remotes, undoing changes, and inspecting history.
34 entriesCron Cheat Sheet
A cron syntax reference: the five fields, special characters, shorthand strings like @daily, and ready-to-copy schedule examples.
27 entriesBash / Linux Cheat Sheet
Essential Linux terminal commands: navigating, managing files, searching, permissions, processes, pipes, and archives.
33 entriesDocker Cheat Sheet
A Docker command reference: building images, running and inspecting containers, volumes, networks, Compose, and cleanup.
25 entriesnpm Cheat Sheet
An npm command reference: installing packages, running scripts, checking versions, updating, publishing, and cleaning up.
26 entriesVim Cheat Sheet
A Vim reference: modes, movement, editing, search and replace, visual mode, and saving or quitting files.
32 entriescurl Cheat Sheet
A quick reference for curl: making requests, sending JSON and forms, headers, authentication, downloads, and debugging.
40 entriesSSH Cheat Sheet
A quick reference for SSH: connecting, generating and copying keys, config files, port forwarding, and scp.
41 entriesVS Code Cheat Sheet
A quick reference for VS Code keyboard shortcuts: navigation, multi-cursor editing, search, panels, and debugging.
58 entriesMermaid Cheat Sheet
Mermaid syntax for flowcharts, sequence diagrams, ER diagrams, class diagrams, state diagrams, and Gantt charts.
34 entriesjq Cheat Sheet
jq filters for reading fields, iterating arrays, selecting and mapping, building objects, and common command-line options.
33 entriesGitHub Actions Cheat Sheet
GitHub Actions workflow YAML at a glance: triggers, jobs, steps, matrices, secrets, caching, expressions, and permissions.
26 entrieskubectl Cheat Sheet
Everyday kubectl commands: contexts, getting and describing resources, logs, exec, applying manifests, scaling, rollouts, and debugging.
30 entriesPowerShell Cheat Sheet
PowerShell essentials: navigation, files, pipelines, filtering objects, variables, environment variables, processes, and Bash equivalents.
33 entriesCSS
Flexbox Cheat Sheet
A CSS Flexbox reference: every container and item property with what it does, plus common layout recipes.
20 entriesCSS Grid Cheat Sheet
A CSS Grid reference: container and item properties, track sizing, placement, alignment, and common layout recipes.
25 entriesTailwind Cheat Sheet
A Tailwind CSS reference: layout, spacing, sizing, typography, colors, flex and grid utilities, plus responsive and state variants.
39 entriesCSS Selectors Cheat Sheet
A quick reference for CSS selectors: basic selectors, combinators, attribute selectors, pseudo-classes, and pseudo-elements.
61 entriesCSS Animations Cheat Sheet
A reference for CSS transitions, @keyframes, animation properties, timing functions, transforms, and reduced-motion queries.
29 entriesWeb
HTTP Headers Cheat Sheet
A quick reference for HTTP headers: content negotiation, caching, CORS, cookies, and the security headers worth setting.
51 entriesHTML Cheat Sheet
A reference for HTML: document structure, semantic elements, text, links and media, forms and input types, and accessibility attributes.
39 entries