Where will Angular-cli be installed?can I run Angular-cli expression without install it globaly?
Its is Installed globally
This is a step you only have to do once. Once it's installed globally with "-g", you can skip this step when creating new Angular 2 projects. Also it's important to note, you need Nodejs and NPM installed before you can proceed with this step.
Its is installed in Nodejs Modules Globally
npm install -g @angular/cli
a dummy location -> usr/local/lib/node_modules/@angular/cli/node_modules/
Then use the following Commands to create a new project
ng new PROJECT_NAME
cd PROJECT_NAME
ng serve
for more info on cli check the wiki