Display directory structure with size in Powershell

Question

Trying to have \"dir\" command that displays size of the sub folders and files. After googling \"powershell directory size\", I found thew two useful links

1. Determi

Answer 1

The first minor mod would be to avoid creating a new FileSystemObject for every directory. Make this a function and pull the new-object out of the pipeline.

function DirWithSize($path=$pwd)
{
    $fso = New-Object -com  Scripting.FileSystemObject
    Get-ChildItem | Format-Table  -AutoSize Mode, LastWriteTime, Name, 
                    @{ Label="Length"; alignment="Left"; Expression={  
                         if($_.PSIsContainer)  
                             {$fso.GetFolder( $_.FullName).Size}   
                         else  
                             {$_.Length}  
                         } 
                     }
}

If you want to avoid COM altogether you could compute the dir sizes using just PowerShell like this:

function DirWithSize($path=$pwd)
{
    Get-ChildItem $path | 
        Foreach {if (!$_.PSIsContainer) {$_} `
                 else {
                     $size=0; `
                     Get-ChildItem $_ -r | Foreach {$size += $_.Length}; `
                     Add-Member NoteProperty Length $size -Inp $_ -PassThru `
                 }} |
        Format-Table Mode, LastWriteTime, Name, Length -Auto
}