Get all the virtual networks in the subscription by using the following command.

azure network vnet list


You will need the Azure RM Powershell Modules installed on your system

# Install the Azure Resource Manager modules from the PowerShell Gallery
Install-Module AzureRM

Login-AzureRMAccount - Logs you into Azure RM
Login-AzureAccount - Logs you into Azure Classic

You can also login from variables:

$cred = Get-Credential
Login-AzureRmAccount -Credential $cred

# How to save your password to an encrypted text file

ConvertTo-SecureString -String "Password123" -AsPlainText -Force | ConvertFrom-SecureString | Set-Content "password.txt"

# You can also use a specific Tenant if you would like a faster log in experience
# Login-AzureRmAccount -TenantId xxxx

# To view all subscriptions for your account
Get-AzureRmSubscription

# To select a default subscription for your current session.
# This is useful when you have multiple subscriptions.
Get-AzureRmSubscription -SubscriptionName "your sub" | Select-AzureRmSubscription

# View your current Azure PowerShell session context
# This session state is only applicable to the current session and will not affect other sessions
Get-AzureRmContext

# To select the default storage context for your current session
Set-AzureRmCurrentStorageAccount -ResourceGroupName "your resource group" -StorageAccountName "your storage account name"

# View your current Azure PowerShell session context
# Note: the CurrentStorageAccount is now set in your session context
Get-AzureRmContext

# To list all of the blobs in all of your containers in all of your accounts
Get-AzureRmStorageAccount | Get-AzureStorageContainer | Get-AzureStorageBlob