I recently had nodejs v6.0.0 installed. I ran
sudo apt-get remove nodejs
and reinstalled the LTS version using
curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
sudo apt-get install -y nodejs
After reinstalling I ran
sudo rm /usr/bin/node
And re-created the symbolic link using
sudo ln -sv /usr/bin/nodejs /usr/bin/node
Now running either with the --version parameter shows different versions... Thanks ahead of time for any assistance!