Rename all booklist to _booklist_

ren_booklists.ps1

# Define the target directory
$targetDirectory = "C:\Path\To\Your\Directory"

# Initialize counters for each file type
$counterPDF = 0
$counterTXT = 0

# Process both "booklist.pdf" and "booklist.txt"
foreach ($fileType in @("booklist.pdf", "booklist.txt")) {
    Get-ChildItem -Path $targetDirectory -Recurse -Filter $fileType | ForEach-Object {
        $oldPath = $_.FullName
        $newPath = Join-Path $_.DirectoryName ("_booklist_" + $_.Extension)

        Write-Host "Renaming: $oldPath`n"

        Rename-Item -Path $oldPath -NewName $newPath -Force

        # Update counters
        if ($_.Extension -eq ".pdf") { $counterPDF++ }
        if ($_.Extension -eq ".txt") { $counterTXT++ }
    }
}

# Display summary
Write-Host "`nSummary:" -ForegroundColor Green
Write-Host "Renamed $counterPDF booklist.pdf file(s)." -ForegroundColor Cyan
Write-Host "Renamed $counterTXT booklist.txt file(s)." -ForegroundColor Magenta