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Node.js Processes and Environment Cheat Sheet

A 2-page reference for process, environment variables and child processes: 14 short entries with copy-ready code.

ForDevelopers

nodejs-processes-and-environment-cheat-sheet.pdfShowing 15 of 59 lines
// Read environment variables
const port = Number(process.env.PORT ?? 3000);

// Load an env file
process.loadEnvFile(".env");

// Command line arguments
const [, , ...args] = process.argv;

// Parse flags
import { parseArgs } from "node:util";
const { values } = parseArgs({
  options: { verbose: { type: "boolean", short: "v" }, out: { type: "string" } },
});

What's inside

Format
PDF, Markdown
Contents
14 sections · 2 pages
Version
1.0 · Updated 3 Oct 2026
Licence
Commercial What this means
Checked
Checked before it ships
  • nodejs-processes-and-environment-cheat-sheet.pdfPDF · 20 KB
  • nodejs-processes-and-environment-cheat-sheet.mdMarkdown · 2 KB
  • LICENSE.txtadded to every download

About this item

A compact, printable reference for process, environment variables and child processes. Each of the 14 entries has a one-line explanation and a small example you can paste into your editor. The PDF uses a two-column A4 layout designed to sit next to your keyboard, and the same content ships as Markdown so you can search it or drop it into your notes. Every JavaScript example targets Node 20.

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