Clone all official Yeoman generators:

bash < <(curl -s http://h3manth.com/clone-generators.bash)

Or use npm to install them all globally with a package.json preinstall script:

{
  "preinstall": "npm i -g generator-angular generator-backbone generator-node ..."
}

The script clones generators for Angular, Backbone, Bootstrap, Chrome Extension, Ember, Gulp, Karma, Mobile, Mocha, Node, Polymer, Webapp, and more!

Happy Hacking! 🔧