Havin Trouble on React js installation

[srvrahul]

@i:~$ sudo npm install -g create-react-app [sudo] password for rahul: /usr//npm-global/bin/create-react-app -> /usr/npm-global/lib/node_modules/create-react-app/index.js

• create-react-app@1.3.3 updated 1 package in 18.296s @i:~$ create-react-app hello create-react-app: command not found