PowerShellでサイズが一番大きいファイルを探す

コマンド

Get-ChildItem "フォルダのパス" -File -Recurse | Sort-Object -Property Length | Select-Object -Last 1 | Format-Table FullName,Length

結果

FullName                                Length
--------                                ------
E:\download\ffxvbench_installer.zip 3925157987

スクリプト

$path = "e:\";
$disk_size = Get-PSDrive $path[0] | % { $_.Used + $_.Free }
$cnt = 1
Get-ChildItem $path -File -Recurse | Sort-Object -Property Length -Descending | Select-Object -First 3 FullName, Length | % {
    $obj = New-Object PSCustomObject
    $obj | Add-Member Rank ($cnt++)
    $obj | Add-Member FullName $_.FullName
    $obj | Add-Member Length ($_.Length / (1024*1024*1024)).ToString("0.0GB")
    $obj | Add-Member Occupancy ($_.Length / $disk_size).ToString("0.0%")
    $obj
 } | Format-Table Rank, FullName, Length, Occupancy -AutoSize

結果

Rank FullName                               Length Occupancy
---- --------                               ------ ---------
   1 E:\download\ffxvbench_installer.zip    3.7GB  3.1%     
   2 E:\download\dummy.rar                  1.1GB  1.0%     
   3 E:\download\foobar.zip                 1.1GB  0.9%