PowerShell: Größe (Summe) aller Dateien berechnen 

Description: Get the size of all files in a directory and its subdirectories
$path = "C:\Windows\System32"
Get-ChildItem -Path $path -File -Recurse | Select-Object -ExpandProperty Length |
Measure-Object -Sum | Select-Object @{n='Size (GB)';e={$_.Sum/1GB}}
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