Here is how to install MongoDB on Ubuntu 20.04 in under 2 minutes:
Step 1 - Import the public key used by the package management system
From a terminal, issue the following command to import the MongoDB public GPG Key from https://www.mongodb.org/static/pgp/server-5.0.asc:
wget -qO - https://www.mongodb.org/static/pgp/server-5.0.asc | sudo apt-key add -
Step 2 - Create a list file for MongoDB
Create the list file /etc/apt/sources.list.d/mongodb-org-5.0.list for your
version of Ubuntu.
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/5.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list
Step 3 - Reload the local package database
Issue the following command to reload the local package database:
sudo apt-get update
apt update downloads the package lists from the repositories and updates
them to get information on the newest versions of packages and their
dependencies. It will do this for all repositories and PPAs.
Step 4 - Install the MongoDB packages
To install the latest stable version, issue the following command:
sudo apt-get install -y mongodb-org
That’s it
You have successfully installed MongoDB on your Ubuntu 20.04 system.