Quick Reference Hub

Developer Cheatsheets

Curated syntax guides, essential CLI commands, and interactive tools for Linux, DevOps, programming languages, and developer workflows.

Linux & DevOps

Bash

This is a quick reference cheat sheet to getting started with linux bash shell scripting.

#shell#sh#echo
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Linux & DevOps

Chmod

This quick reference cheat sheet provides a brief overview of file permissions, and the operation of the chmod command

#permission
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Programming

C++

C++ quick reference cheat sheet that provides basic syntax and methods.

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Linux & DevOps

Cron

Cron is most suitable for scheduling repetitive tasks. Scheduling one-time tasks can be accomplished using the associated at utility.

#schedule#crontab#time
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Web Development

CSS 3

This is a quick reference cheat sheet for CSS goodness, listing selector syntax, properties, units and other useful bits of information.

#web#css#style
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Linux & DevOps

Curl

This Curl cheat sheet contains commands and examples of some common Curl tricks.

#url#request
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Linux & DevOps

Docker

This is a quick reference cheat sheet for Docker. And you can find the most common Docker commands here.

#container#virtual
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Web Development

Express

A quick reference cheatsheet for Express, a flexible and streamlined web framework for Node.js

#config#format
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Linux & DevOps

Git

This cheat sheet summarizes commonly used Git command line instructions for quick reference.

#github#gitlab#version
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Programming

Go

This cheat sheet provided basic syntax and methods to help you using Go.

#Go
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Web Development

HTML

This HTML quick reference cheat sheet lists the common HTML and HTML5 tags in readable layout.

#web
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Programming

Java

This cheat sheet is a crash course for Java beginners and help review the basic syntax of the Java language.

#object-oriented#class
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Web Development

JavaScript

A JavaScript cheat sheet with the most important concepts, functions, methods, and more. A complete quick reference for beginners.

#js#web
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Data & Databases

JSON

This is a quick reference cheat sheet for understanding and writing JSON format configuration files.

#config#format
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Linux & DevOps

Kubernetes

This page contains a list of commonly used kubectl commands and flags.

#config#format
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Tools & Syntax

LaTeX

This cheat sheet summarizes a reference list of LaTeX commonly used display math notation and some application examples of KaTeX.

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Tools & Syntax

Markdown

This is a quick reference cheat sheet to the Markdown syntax.

#md#Markup#text
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Data & Databases

MongoDB

MongoDB quick reference for mongosh connections, CRUD queries, aggregation, indexes, and administration.

#NoSQL#DB
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Linux & DevOps

npm

A NPM (node package manager) cheat sheet with the most important concepts, and commands to install, update, and manage your node packages.

#js#web#node
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Web Development

PHP

This PHP cheat sheet provides a reference for quickly looking up the correct syntax for the code you use most frequently.

#web
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Data & Databases

PostgreSQL

The PostgreSQL cheat sheet provides you with the common PostgreSQL commands and statements.

#DB#RDBMS
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Programming

Python

The Python cheat sheet is a one-page reference sheet for the Python 3 programming language.

#script#interpret
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Web Development

React

A React cheat sheet with the most important concepts, functions, methods, and more. A complete quick reference for beginners.

#react#web
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Data & Databases

Redis

This is a redis quick reference cheat sheet that lists examples of redis commands

#cache
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Tools & Syntax

RegEX

A quick reference for regular expressions (regex), including symbols, ranges, grouping, assertions and some sample patterns to get you started.

#regular expression#regexp#pattern
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Programming

Rust

The Rust quick reference cheat sheet that aims at providing help on writing basic syntax and methods.

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Data & Databases

SQL

SQL statements and MySQL command examples for querying data, managing tables, joins, and transactions.

#RDBMS#DB
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Linux & DevOps

SSH

This quick reference cheat sheet provides various for using SSH.

#protocol#remote#network
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Linux & DevOps

Terraform

This is a quick reference cheat sheet for Terraform.

#HCL#infrastructure
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Web Development

TypeScript

A TypeScript cheat sheet with the most important concepts, functions, methods, and more. A complete quick reference for beginners.

#ts#web
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Web Development

Vue

A Vue 3 cheat sheet with the most important concepts, reactivity, component system, routing, and more. Updated for the latest version and perfect for both beginners and advanced users.

#vue#web
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Data & Databases

YAML

This is a quick reference cheat sheet for understanding and writing YAML format configuration files.

#config#format
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