NodeJS Installation on Ubuntu

Let’s first update the system

sudo apt-get update

If you have node installed, uninstall it.

sudo apt-get remove nodejs

Clean your system.

sudo apt-get autoremove

If you previously added a Node repository, remove them. The below command might be useful, but use it with utmost care:

sudo rm -f /etc/apt/sources.list.d/nodesource*

If your Ubuntu version is one of the following:

• Ubuntu 12.04 LTS (Precise Pangolin)
• Ubuntu 14.04 LTS (Trusty Tahr)
• Ubuntu 14.10 (Utopic Unicorn)

Install the proper repository by running:

curl -sL https://deb.nodesource.com/setup_0.12 | sudo bash -

Install Node by running:

sudo apt-get install -y nodejs