Quick references.
The syntax and patterns you keep re-googling — collected, condensed, copy-paste ready.
ASCII Table — Complete Character Code Reference
Full ASCII table with all 128 characters showing decimal, hexadecimal, octal, binary values and descriptions for control characters and printable characters.
View cheatsheetchmod Permissions Cheatsheet — Unix File Permission Reference
Unix file permissions explained: numeric (octal) and symbolic notation, common permission sets, chmod command examples, and special permissions (setuid, setgid, sticky bit).
View cheatsheetCron Syntax Cheatsheet — Schedule Expressions Explained
Cron expression syntax reference with all five fields, special characters, common schedule examples, and platform-specific differences for Linux, macOS, and cloud services.
View cheatsheetCSS Selectors Cheatsheet — Every Selector with Examples
Complete CSS selector reference covering basic selectors, combinators, pseudo-classes, pseudo-elements, and attribute selectors with practical examples.
View cheatsheetCSS Units Cheatsheet — Every Unit Explained
All CSS units explained with use cases: absolute units (px, pt, cm), relative units (em, rem, vw, vh, %), and when to use each one for responsive design.
View cheatsheetDocker Commands Cheatsheet — Essential Docker & Compose Reference
Essential Docker commands for images, containers, volumes, networks, and Docker Compose. With practical examples for everyday development workflows.
View cheatsheetGit Commands Cheatsheet — Essential Commands by Workflow
Essential git commands organized by workflow: setup, staging, branching, merging, remotes, stashing, log, and undoing changes. With examples and flags.
View cheatsheetHTML Entities Cheatsheet — Symbols, Math, Arrows & More
Common HTML entities with entity names, numeric codes, and rendered characters. Covers symbols, math operators, arrows, currency, accented characters, and special punctuation.
View cheatsheetHTTP Status Codes — Complete Reference Guide
Every HTTP status code from 1xx to 5xx with descriptions, common causes, and when you'll encounter each one in web development.
View cheatsheetKeyboard Shortcuts Cheatsheet — VS Code, DevTools, Terminal & OS
Essential keyboard shortcuts for VS Code, Chrome DevTools, terminal/command line, and macOS/Windows. Boost your development speed with these key combos.
View cheatsheetMIME Types Cheatsheet — Common Content Types for Web Development
Common MIME types for web development organized by category: text, image, audio, video, application, and font types with file extensions and usage notes.
View cheatsheetRegex Cheatsheet — Regular Expression Syntax Reference
Complete regular expression reference with metacharacters, quantifiers, anchors, groups, lookaheads, flags, and practical examples for pattern matching.
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