carrierwave

https://github.com/carrierwaveuploader/carrierwave

Ruby

Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks

CarrierWave::Uploader::Cache::ClassMethods#clean_cached_files!

Removes cached files which are older than one day. You could call this method
from a rake task to clean out old cached files.

You can call this method directly on the module like this:

  CarrierWave.clean_cached_files!

=== Note

This only works as long as you haven't done anything funky with your cache_dir.
It's recommended that you keep cache files in one place only.

Source | Google | Stack overflow

Edit

git clone [email protected]:carrierwaveuploader/carrierwave.git

cd carrierwave

open lib/carrierwave/uploader/cache.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-CarrierWave--Uploader--Cache--ClassMethods-clean_cached_files--for-pr

# Commit to git

git add lib/carrierwave/uploader/cache.rbgit commit -m "better docs for CarrierWave::Uploader::Cache::ClassMethods#clean_cached_files!"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-CarrierWave--Uploader--Cache--ClassMethods-clean_cached_files--for-pr

hub pull-request

# Celebrate!