Recursively searches all sub-folders in the current location and outputs a csv file listing all file and folder sizes, and the number of files in each folder.

Recursive-Directory-Listing-with-File-Size.ps1

# Get the current directory
$currentDir = Get-Location

# Prompt the user for a filename to save the results
$filename = Read-Host -Prompt "Enter the filename to save the results (e.g., output.csv)"

# Use an ArrayList for more efficient data collection
$results = New-Object System.Collections.ArrayList

# Hashtable to store folder sizes and file counts
$folderData = @{}

# Fetch all items recursively
$items = Get-ChildItem -Path $currentDir -Recurse

$totalItems = $items.Count
$currentItemNumber = 0

foreach ($item in $items) {
    $currentItemNumber++
    Write-Progress -PercentComplete (($currentItemNumber / $totalItems) * 100) -Status "Processing items" -Activity "Processed $currentItemNumber of $totalItems"

    if ($item -is [System.IO.FileInfo]) {
        # Update folder data in the hashtable
        $parentDir = $item.DirectoryName
        if (-not $folderData.ContainsKey($parentDir)) {
            $folderData[$parentDir] = @{
                'Size' = 0;
                'FileCount' = 0;
            }
        }
        $folderData[$parentDir]['Size'] += $item.Length
        $folderData[$parentDir]['FileCount'] += 1

        # Add file data to results
        $null = $results.Add([PSCustomObject]@{
            'Path' = $item.FullName
            'Size (Bytes)' = $item.Length
            'File Count' = $null
            'Type' = 'File'
        })
    }
}

foreach ($key in $folderData.Keys) {
    $null = $results.Add([PSCustomObject]@{
        'Path' = $key
        'Size (Bytes)' = $folderData[$key]['Size']
        'File Count' = $folderData[$key]['FileCount']
        'Type' = 'Folder'
    })
}

# Save the results to the provided filename
$results | Export-Csv -Path $filename -NoTypeInformation

Write-Host "Results saved to $filename."