How to install angular CLI?

To install Angular CLI you should have installed Node 6.9.0 or higher, and NPM 3 or higher. To check the versions that you have on your machine type the following commands in a command window.

·       node -v 

·       npm -v

Once you have Node and NPM installed. Run Command Prompt as an administrator and execute the following command. Flag -g installs Angular CLI globally on your machine.
npm install -g @angular/cli

You can also use i as shortcut for install. So, the above command can also be rewritten as shown below

npm i -g @angular/cli

To verify the version of Angular CLI installed, execute the following command
ng -v

Angular CLI should be installed globally so that it will be available to all the project. If you install only for project specific then it will not available for other projects.