du.ps1

#
# Print a summary of disk usage in the supplied directory
#  -directory <directory>
#
Param(
    [parameter(Mandatory=$true)]
    [alias("d")]
    $directory

)
gci $directory | %{$f=$_; $d = gci -r $_.FullName; $r = Measure-Object;try { $r = %{ $d | measure-object -property length -sum -ErrorAction Stop }} catch { $r.Sum = 0; } ; $r | select  @{Name="Name"; Expression={$f}} , @{Name="Sum (MB)"; Expression={  "{0:N3}" -f ($_.sum / 1MB) }}, Sum } | sort Sum -desc | format-table -Property Name,"Sum (MB)", Sum -autosize