nodemon: command not found in ubuntu code example

Example 1: nodemon: command not found

sudo npm install nodemon -g
// This command will install nodemon into the system

Example 2: nodemon command not found

npx nodemon server.js
or add in package.json config:

...
"scripts": {
    "dev": "npx nodemon server.js"
  },
...
then run:

npm run dev