JAVASCRIPT

create next js app

npx create-next-app <app name>   //eg: npx create-next-app my-app
cd my-app  //to go to the folder
npm run dev  // to run the app

create new Next.js

npx create-next-app@latest

next js create app

npx create-next-app nextjs-app --use-npm 
cd nextjs-app
npm run dev

create next js app

npm init next-app nextjs-blog --example "https://github.com/vercel/next-learn-starter/tree/master/learn-starter"

next js create app

npx create-next-app your-blog-name-here