Azure Storage get size by folder

get_storage_size.ps1

# Run first "connect-azAccount" to set AAD user authentication

$filesystemName = 'storageFilesystem'
$path = 'folder'
$storageName = 'storagName'

$ctx = New-AzStorageContext -StorageAccountName $storageName -UseConnectedAccount

$Files = Get-AzDataLakeGen2ChildItem -Context $ctx -FileSystem $filesystemName -Path $path -Recurse | Where-Object IsDirectory -eq $false

$Total = $Files | Measure-Object -Property Length -Sum

$Total | Select-Object @{Name = "SizeInGb"; Expression={$_.Sum/1GB}}