How to sort mail attachments according to given criteria?

Question

gmail

Good afternoon.
Tell me how to configure the fetchmail + procmail + ripmime bundle .
Now fetchmail receives mail and adds it to a file. I am unable to configure procmail and ripmime. The task is the following - to write a rule that would check the presence of an attached file (torrent) in the letter and set the ripmime task. He, in turn, processed this letter, creating a folder in a certain place, called it the subject of the letter, saved the attachment (torrent) to it. Put letters without attachments in another folder.