# install azure-cli
sudo apt-get install nodejs-legacy
sudo apt-get install npm
sudo npm install -g azure-cli

# This will output an url and a device code for you to use browser to login  
azure login

# This will prompt for your password in the console
azure login -u <your organizational ID email address>

# This will login in using a service principal
azure login -u "<service-principal-id>" -p "<key>" --service-principal --tenant "<tenant-id>"

# List VMs disks
azure vm disk list

# Remove all disks of VMs labeled with LABEL
for disk in $(azure vm disk list | grep LABEL | awk '{print $2}')
do 
    azure vm disk delete --blob-delete "$disk"
done