Get-DiskUsage

Get-DiskUsage.ps1

function Get-DiskUsage ($Path)
{
    $BIG_THRESHOLD_MB = 50

    $directories = @(Get-ChildItem $Path -Directory)

    function Get-DiskUsage2 ($directoryFullName, $directoryName, $recurse)
    {
        $items = Get-ChildItem -Recurse:$recurse $directoryFullName | ?{ -not $_.PSIsContainer } | Select Length
        $measure = $items | Measure-Object Length -Sum -Average -Maximum -Minimum -StandardDeviation
        $measureBig = $items | ?{ $_.Length -gt $BIG_THRESHOLD_MB * 1000 * 1000 } | Measure-Object Length -Sum
        [PSCustomObject]@{
            Name = $directoryName
            FullName = $directoryFullName
            Count = $measure.Count
            TotalSize = $measure.Sum
            AverageSize = $measure.Average
            MaximumSize = $measure.Maximum
            MinimumSize = $measure.Minimum
            StandardDeviationSize = $measure.StandardDeviation
            CountBig = $measureBig.Count
            TotalSizeBig = $measureBig.Sum
        }
    }

    $cnt = 0
    $tot = $directories.Length
    $directories | %{
        Write-Progress -Activity 'Get-DiskUsage...' -Status $_.Name -PercentComplete ($cnt * 100 / $tot)

        Get-DiskUsage2 $_.FullName $_.Name $true

        $cnt++
    }

    Write-Progress -Activity 'Get-DiskUsage...' -Status '.' -PercentComplete 100

    Get-DiskUsage2 $Path '.' $false

    Write-Progress -Activity 'Get-DiskUsage...' -Completed
}