Install nvm(cURL)
$ curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.31.1/install.sh | bash
OR with Wget
$ wget -qO- https://raw.githubusercontent.com/creationix/nvm/v0.33.1/install.sh | bash
Display list of installed versions
$ nvm ls
Display list of versions that are available to install
$ nvm ls-remote
Install your preferred version
$ nvm install v7.5.0
Set this version as the default
$ nvm alias default v7.5.0