I am new to firebase and I'm trying to install it on Ubuntu.
I've used npm install -g firebase-tools, 
when I run the command firebase init I get firebase: command not found. 
I've looked at this post, npm get prefix gives me /usr .
So I added export PATH="/usr/bin:$PATH" at the end of .bashrc file, But still same problem.
I also tried alias firebase="`npm config get prefix`/bin/firebase", But there is no firebase folder under /usr/bin at all, so it also fails. 
when I search for firebase folder, it is located at ~/.npm/firebase. 
Any idea what is going wrong?