One of the most common tasks in Azure is knowing how to delete a particular resource group. In order to do that, type:

az group delete --name yourresourcegroup --no-wait --yes

In order to delete all resource groups that start with project01, for example, you’ll first need to make sure you’re in a Bash shell and not PowerShell. Then, type:

az group list --query "[?starts_with(name,'project01')].[name]" --output tsv | xargs -L1 bash -c 'az group delete --name $0 --no-wait --yes'