This will install wp-cli in your machine.

Now you no need to worry how to install wp-cli in your machine. If nodejs is intsalled in your machine then all you need to do is

npm install wp-commandline -g

This will install all wp-cli commands in your terminal. The only thing requires is nodejs, php and mysql installed in your machine.

After installing wp-commandline type below command to check whether the wp command is working or not.

wp --info

Here is the list of all wp commands

All the contributors of WP-CLI