How to Install Node.js 12 on Ubuntu 19.04

Install the curl package by using the following command

root@linuxhelp:~# apt install curl
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  libcurl4
The following NEW packages will be installed:
  curl
The following packages will be upgraded:
  libcurl4
1 upgraded, 1 newly installed, 0 to remove and 152 not upgraded.
Need to get 399 kB of archives.
After this operation, 412 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
.
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Setting up libcurl4:amd64 (7.64.0-2ubuntu1.1) ...
Setting up curl (7.64.0-2ubuntu1.1) ...
Processing triggers for man-db (2.8.5-2) ...
Processing triggers for libc-bin (2.29-0ubuntu2) ...

Download the node packages. Use the Following command

root@linuxhelp:~# 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
Hit:1 http://security.ubuntu.com/ubuntu disco-security InRelease
Hit:2 http://in.archive.ubuntu.com/ubuntu disco InRelease
Hit:3 http://in.archive.ubuntu.com/ubuntu disco-updates InRelease
Hit:4 http://in.archive.ubuntu.com/ubuntu disco-backports InRelease
Reading package lists... Done
.
.
+ apt-get update
Hit:1 http://security.ubuntu.com/ubuntu disco-security InRelease
Get:2 https://deb.nodesource.com/node_12.x disco InRelease [4,583 B]      
Hit:3 http://in.archive.ubuntu.com/ubuntu disco InRelease                 
Get:4 https://deb.nodesource.com/node_12.x disco/main amd64 Packages [765 B]
Hit:5 http://in.archive.ubuntu.com/ubuntu disco-updates InRelease
Hit:6 http://in.archive.ubuntu.com/ubuntu disco-backports InRelease
Fetched 5,348 B in 1s (3,976 B/s)
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

root@linuxhelp:~# apt install nodejs
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  libpython-stdlib libpython2-stdlib libpython2.7-minimal libpython2.7-stdlib python python-minimal python2
  python2-minimal python2.7 python2.7-minimal
Suggested packages:
  python-doc python-tk python2-doc python2.7-doc binfmt-support
The following NEW packages will be installed:
  libpython-stdlib libpython2-stdlib libpython2.7-minimal libpython2.7-stdlib nodejs python python-minimal
  python2 python2-minimal python2.7 python2.7-minimal
0 upgraded, 11 newly installed, 0 to remove and 152 not upgraded.
Need to get 20.6 MB of archives.
After this operation, 97.3 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
.
.
.
Unpacking nodejs (12.4.0-1nodesource1) ...
Setting up nodejs (12.4.0-1nodesource1) ...
Setting up libpython2.7-stdlib:amd64 (2.7.16-2) ...
Setting up python2.7 (2.7.16-2) ...
Setting up libpython2-stdlib:amd64 (2.7.16-1) ...
Setting up python2 (2.7.16-1) ...
Setting up libpython-stdlib:amd64 (2.7.16-1) ...
Setting up python (2.7.16-1) ...
Processing triggers for mime-support (3.60ubuntu1) ...
Processing triggers for gnome-menus (3.32.0-1ubuntu1) ...
Processing triggers for man-db (2.8.5-2) ...
Processing triggers for desktop-file-utils (0.23-4ubuntu1) ...

root@linuxhelp:~# node -v
v12.4.0