Introduction

Prerequisites

• Ubuntu 20.04 LTS
• SSH access with sudo privileges
• Firewall Port: 3000

sudo apt-get update
sudo apt-get upgrade

Step #1: Add Node.js and npm from NodeSource Repository

sudo apt-get install curl

Current Release

curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -

Latest Stable Release

curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -

## Installing the NodeSource Node.js 12.x repo...

## Populating apt-get cache...

+ apt-get update
Ign:1 https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 InRelease
Hit:2 https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 Release
Hit:3 https://deb.nodesource.com/node_12.x bionic InRelease
Hit:5 http://ap-south-1.ec2.archive.ubuntu.com/ubuntu bionic InRelease
Get:6 http://ap-south-1.ec2.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:7 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Get:8 http://ap-south-1.ec2.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Fetched 252 kB in 1s (221 kB/s)
Reading package lists... Done

## Confirming "bionic" is supported...

+ curl -sLf -o /dev/null 'https://deb.nodesource.com/node_12.x/dists/bionic/Release'

## Adding the NodeSource signing key to your keyring...

+ curl -s https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add -
OK

## Creating apt sources list file for the NodeSource Node.js 12.x repo...

+ echo 'deb https://deb.nodesource.com/node_12.x bionic main' > /etc/apt/sources.list.d/nodesource.list
+ echo 'deb-src https://deb.nodesource.com/node_12.x bionic main' >> /etc/apt/sources.list.d/nodesource.list

## Running `apt-get update` for you...

+ apt-get update
Ign:1 https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 InRelease
Hit:2 https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 Release
Hit:4 https://deb.nodesource.com/node_12.x bionic InRelease
Hit:5 http://ap-south-1.ec2.archive.ubuntu.com/ubuntu bionic InRelease
Hit:6 http://ap-south-1.ec2.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:7 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:8 http://ap-south-1.ec2.archive.ubuntu.com/ubuntu bionic-backports InRelease
Reading package lists... Done

## Run `sudo apt-get install -y nodejs` to install Node.js 12.x and npm
## You may also need development tools to build native addons:
sudo apt-get install gcc g++ make
## To install the Yarn package manager, run:
curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt-get update && sudo apt-get install yarn

Step #2: How to Install Node.js and NPM on Ubuntu 20.04 LTS

sudo apt-get install -y nodejs

Step #3: Check Node.js and NPM Version on Ubuntu

node --version

$ node --version
v12.18.3

npm --version

$ npm --version
6.14.6

Step #4: Testing Node.js Server

sudo nano nodeapp.js

const http = require('http');

const hostname = '127.0.0.1';
const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello World\n');
});

  server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});

node nodeapp.js

$ node nodeapp.js

Server running at http://127.0.0.1:3000/

http://127.0.0.1:3000

Installing Node.js and NPM using NVM

curl -sL https://raw.githubusercontent.com/creationix/nvm/v0.35.3/install.sh -o install_nvm.sh

bash install_nvm.sh

source ~/.profile

nvm ls-remote

.....
v12.14.0 (LTS: Erbium)
v12.14.1 (LTS: Erbium)
v12.15.0 (LTS: Erbium)
v12.16.0 (LTS: Erbium)
v12.16.1 (LTS: Erbium)
v12.16.2 (LTS: Erbium)
v12.16.3 (LTS: Erbium)
v12.17.0 (LTS: Erbium)
v12.18.0 (LTS: Erbium)
v12.18.1 (LTS: Erbium)
v12.18.2 (LTS: Erbium)
v12.18.3 (Latest LTS: Erbium)
v13.0.0
v13.0.1
v13.1.0
v13.2.0
v13.3.0
v13.4.0
v13.5.0
v13.6.0
v13.7.0
v13.8.0
v13.9.0
v13.10.0
v13.10.1
v13.11.0
v13.12.0
v13.13.0
v13.14.0
v14.0.0
v14.1.0
v14.2.0
v14.3.0
v14.4.0
v14.5.0
v14.6.0
v14.7.0
v14.8.0
v14.9.0
v14.10.0
v14.10.1

sudo chown -R $USER:$(id -gn $USER) /home/ubuntu/.config

nvm install 12.18.3

nvm use 12.18.3

node -v

nvm --version

Uninstall Node.js and NPM in Ubuntu

$ sudo apt remove nodejs npm

$ sudo apt remove nodejs npm
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'npm' is not installed, so not removed
The following packages will be REMOVED:
nodejs
0 upgraded, 0 newly installed, 1 to remove and 84 not upgraded.
After this operation, 76.5 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 143850 files and directories currently installed.)
Removing nodejs (12.16.3-1nodesource1) ...
Processing triggers for man-db (2.7.5-1) ...