I have often found myself wanting to know how many files are in a folder, including files in sub-folders. I whipped up a little Ruby code for just that:

folder_to_count = "/path/to/folder"  # You should change this
begin
  file_count = Dir.glob(File.join(folder_to_count, '**', '*')).select { |file| File.file?(file) }.count
rescue
  puts "ERROR: The number of files could not be obtained"
  # typically occurs if folder_to_count does not exist
end