Scrape a title from specifically formatted content then download and rename

download_data.rb

require 'nokogiri'
require 'open-uri'

dir = Dir.pwd
url = "some_url"

data = Nokogiri::HTML(open(url))
data.css('a').each do |link|
  filename = link['href']
  if filename =~ /^BD/
    array = filename.split('_')
    new_filename = "#{array[0].gsub("%23","#")}_#{array[1].to_i+2}_#{array[2]}"
    command = "wget -c -O #{dir}/#{new_filename} #{url}#{filename}"
    # puts command
    system command
  end
end