Получите папку PowerShell
"{0} MB" -f ((Get-ChildItem C:\users\ -Recurse | Measure-Object -Property Length -Sum -ErrorAction Stop).Sum / 1MB)
Eager Emu
"{0} MB" -f ((Get-ChildItem C:\users\ -Recurse | Measure-Object -Property Length -Sum -ErrorAction Stop).Sum / 1MB)
ls -r | measure -sum Length