Install specific version of ng cli

npm install -g @angular/cli@{version-number}

This command would install the 1.0.0 version:

npm install -g @angular/[email protected]

You can see the available versions with the following command:

npm view @angular/cli

NB: You can also install the latest available version:

npm install @angular/cli@latest

In case anyone stumbles on this question while looking for a way to use angular-cli to build Angular 2 apps, @angular/[email protected] generated apps installs angular 4.0.0 instead of 2xx.

To avoid the round-trip of uninstalling the cli and looking for the most recent version that builds 2xx, use @angular/[email protected]

It builds Angular 2.4.1 ;)