Rake task to remove the image and audio files created by captcha

To add a rake task to the rails application which removes all the image and audio files created by captcha, create a file named remove_captcha_files.rake in the lib/tasks directory.
Add the following code to the lib/tasks/remove_captcha_files.rake file…

desc "Remove captcha images and audio files"
task :remove_captcha_files do
    image_path = "#{RAILS_ROOT}/public/images/captcha/"
    audio_path = "#{RAILS_ROOT}/public/captcha_audio/"
    Dir.foreach(image_path){|file| File.delete(image_path+file) if (/^.*\.jpg$/).match(file)} if File.exist?(image_path)
    Dir.foreach(audio_path){|file| File.delete(audio_path+file) if (/^.*\.wav$/).match(file)} if File.exist?(audio_path)
    puts "Captcha files removed."
end

You can confirm that task is added to your app by running
rake –-task

To remove all the files created by captcha, simply run the command
rake remove_captcha_files
from the command line from your application root.