First, check out the Azure CLI Tutorial to get an overview of Azure CLI. Suppose you are specific to Ubuntu and want to install the Azure CLI.
Install Azure CLI Ubuntu
There are two ways for the installation, but the quickest and simplest way is to use the below single command to install Azure CLI on Ubuntu.
curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
Note: It is better to restart once after the installation to view the changes.
Check out how to Install Azure CLI on Linux.
You can also check out Installing Azure CLI On Windows.
In case you are using Mac OS, you can check out How to install Azure CLI on Mac
After the installation, you can also check out How to log in to Azure CLI
Voila !! This is how to install Azure CLI in Ubuntu. It is that easy.

I am Rajkishore, and I have over 14 years of experience in Microsoft Azure and AWS, with good experience in Azure Functions, Storage, Virtual Machine, Logic Apps, PowerShell Commands, CLI Commands, Machine Learning, AI, Azure Cognitive Services, DevOps, etc. Not only that, I do have good real-time experience in designing and developing cloud-native data integrations on Azure or AWS, etc. I hope you will learn from these practical Azure tutorials. Read more.