I am using ubuntu 14.04 LTS, I have nodejs (not node) and npm installed.
I had installed gulp using npm install gulp -g.
But my command gulp does not work, it runs silently returning nothing!

I am using ubuntu 14.04 LTS, I have nodejs (not node) and npm installed.
I had installed gulp using npm install gulp -g.
But my command gulp does not work, it runs silently returning nothing!

I ran into the same problem today on Ubuntu 14.04 LTS. After debugging I noticed that I had accidentally installed nodejs and node using apt-get. After running
sudo apt-get remove node
the problem was fixed.
Hope this helps.