How to install Microsoft Azure CLI and Add Extension on Windows 10

1.Download azure-cli.msi and install
2.Open Windows PowerShell or Command Shell as administrator
3.Enter "az -h" to list command
4.Enter "az login -u 'username' -p 'password' --allow-no-subscriptions" to login Microsoft Azure
5.Enter "az extension list-available --output table" to list extension
6.Enter "az extension add --name azure-devops" to install target extension
7.Enter "az devops -h" to list command