How to create and launch a local yeoman generator

I want to create a local generator for personal use only, i have installed yeoman and run the yo generator command :

yeoman generator question

As shown in the picture it says the name is already exists on npm i am wondering how can i create and launch locally a yeoman generator ?

Thank you in advance!

Solution

Hey you can take a look at these links. I think you will get what you are looking for here.