5 Node.js CLI Tools You Can Build in Under an Hour

5 Node.js CLI Tools You Can Build in Under an Hour Building command-line tools is one of the most satisfying things you can do as a developer. There's something deeply rewarding about typing a short command and watching it solve a real problem instantly. And with Node.js, the barrier to entry is remarkably low. In this tutorial, we'll build five genuinely useful CLI tools from scratch. Each one is under 30 lines of code, solves a real problem you'll encounter daily, and can be published to npm in minutes. By the end, you'll have five tools in your belt and a repeatable workflow for shipping more. Let's get started. The Setup: How Every CLI Tool Begins Every Node.js CLI tool follows the same skeleton. Create a directory, initialize it, and point the bin field at your script: mkdir my-tool && cd my-tool npm init -y Then edit package.json to add a bin entry: { "name" : "my-tool" , "version" : "1.0.0" , "bin" : { "my-tool" : "./index.js" } } Your index.js file needs exactly one special lin