This blog will help you to understand how to install node.js

Install Node.js

First update the apt-get package lists with this command:

$ sudo apt-get update

Now install the git package using apt-get

$ sudo apt-get install git

Please change your home directory now and download the source for Node,js with wget command. Paste this link which will be going to download node.js for you.

$ cd ~
$ wget https://nodejs.org/dist/v4.2.3/node-v4.2.3-linux-x64.tar.gz

Now make the new directory node and extract the tar archive it with the following commands:

$ mkdir node
$ tar xvf node-v*.tar.?z --strip-components=1 -C ./node

Since we no longer needed Node.js archive that you have just downloaded it, change your home directory and use this command rm to delete Node.js archive:

$ cd ~
$ rm -rf node-v*

Next, we'll configure the global prefix of npm, where npm will create symbolic links to installed Node packages, to somewhere that it's in your default path. We'll set it to /usr/local with this command:

$ mkdir node/etc
$ echo 'prefix=/usr/local' > node/etc/npmrc

Now move the node and npm binaries to installation location via this command:

$ sudo mv node /opt/

Now change the owner of files to root:

$ sudo chown -R root: /opt/node

Now in your default path, create symbolic links of the node and npm binaries:

$ sudo ln -s /opt/node/bin/node /usr/local/bin/node
$ sudo ln -s /opt/node/bin/npm /usr/local/bin/npm

Node.js is installed successfully. To check it please run this command:

$ node -v

All done!. 

Thanks for reading the blog