# Set the root directory where your subdirectories are located
$rootDirectory = "C:\Your Root Directory"

# Get all text files in subdirectories
$textFiles = Get-ChildItem -Path $rootDirectory -Recurse -Filter *.txt

# Create an empty hashtable to store file contents
$fileContents = @{}

# Loop through each text file and combine content with the same name
foreach ($file in $textFiles) {
    $fileName = $file.Name
    $fileContent = Get-Content $file.FullName -Raw

    # If the file name already exists in the hashtable, append content with a newline
    if ($fileContents.ContainsKey($fileName)) {
        $fileContents[$fileName] += "`r`n$fileContent"
    }
    else {
        # If the file name is not in the hashtable, add it with the content
        $fileContents[$fileName] = $fileContent
    }
}

# Specify the output directory for the combined files
$outputDirectory = "C:\Folder for combined files"

# Create the output directory if it doesn't exist
if (-not (Test-Path -Path $outputDirectory -PathType Container)) {
    New-Item -Path $outputDirectory -ItemType Directory
}

# Loop through the hashtable and write combined content to new files
foreach ($fileName in $fileContents.Keys) {
    $combinedContent = $fileContents[$fileName]
    $outputPath = Join-Path -Path $outputDirectory -ChildPath $fileName
    $combinedContent | Out-File -FilePath $outputPath
}

Write-Host "Files combined and saved to $outputDirectory"