Align with bash design guidelines

Author: lanicolas

articles/mysql/single-server/how-to-connect-with-managed-identity.md

@@ -49,24 +49,24 @@ To configure the identity in the following steps, use the [az identity show](/cl
 ```azurecli
 # Get resource ID of the user-assigned identity
 
-resourceID=$(az identity show --resource-group myResourceGroup --name myManagedIdentity --query id --output tsv)
+RESOURCE_ID=$(az identity show --resource-group myResourceGroup --name myManagedIdentity --query id --output tsv)
 
 # Get client ID of the user-assigned identity
 
 
-clientID=$(az identity show --resource-group myResourceGroup --name myManagedIdentity --query clientId --output tsv)
+CLIENT_ID=$(az identity show --resource-group myResourceGroup --name myManagedIdentity --query clientId --output tsv)
 ```
 
 We can now assign the user-assigned identity to the VM with the [az vm identity assign](/cli/azure/vm/identity#az-vm-identity-assign) command:
 
 ```azurecli
-az vm identity assign --resource-group myResourceGroup --name myVM --identities $resourceID
+az vm identity assign --resource-group myResourceGroup --name myVM --identities $RESOURCE_ID
 ```
 
 To finish setup, show the value of the Client ID, which you'll need in the next few steps:
 
 ```bash
-echo $clientID
+echo $CLIENT_ID
 ```
 
 ## Creating a MySQL user for your Managed Identity
@@ -98,7 +98,7 @@ For testing purposes, you can run the following commands in your shell. Note you
 # Retrieve the access token
 
 
-accessToken=$(curl -s 'http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=https%3A%2F%2Fossrdbms-aad.database.windows.net&client_id=CLIENT_ID' -H Metadata:true | jq -r .access_token)
+ACCESS_TOKEN=$(curl -s 'http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=https%3A%2F%2Fossrdbms-aad.database.windows.net&client_id=CLIENT_ID' -H Metadata:true | jq -r .access_token)
 
 # Connect to the database