gistfile1.txt

# Set the path to the folder containing the files
$folderPath = "C:\Path\To\Your\Folder"

# Get all files in the folder
Get-ChildItem -Path $folderPath -File | ForEach-Object {
    $file = $_
    
    # Use regex to match the pattern ending with _numbers (e.g. _20230230230)
    if ($file.Name -match "^(.*?\.\w+)_\d+$") {
        $newName = $matches[1]

        # Full path for new name
        $newFullPath = Join-Path -Path $folderPath -ChildPath $newName

        # Rename the file
        Rename-Item -Path $file.FullName -NewName $newFullPath
        Write-Host "Renamed '$($file.Name)' to '$newName'"
    }
}