How Can I get all subscriptions within a specific tenant in azure CLI

@Yuval Shmaryahu You can achieve this with the account extension provided by Azure CLI. Here is the extension reference: account

The az account tenant list command lists all the tenants that are authorized for your account.

Likewise, the az account subscription list gets all the subscriptions for a tenant.

You can also explore the Azure PowerShell alternatives for the same: Get-AzTenant and Get-AzSubscription. (It becomes a tad more flexible with PowerShell as you can pass the Tenant ID with the -TenantId parameter while fetching Subscriptions).