Hi Michael, I'm a little confused still with where preprocess sends the clean data after the last announcement: "An anonymous poster on helpOSTS highlighted a small ambiguity in the Assignment 2 specification: where do the outputs from preprocess and breaches_per_month go? Please make sure that the two programs send output data to standard output, not to a named file. The marking program will then be able to capture the outputs." I wouldn't say it was an ambiguity because the Assignment 2 outline says: "The Bash Shell script at the head of this program must be called breaches_per_month; it too takes a single argument: the name of the (cleaned!) data-file." Which implies preprocess must produce a cleaned file. So breaches_per_month doesn't take in the the name of the cleaned data-file now? Did you change your mind on this after posting the assignment? I feel like it makes more sense to create a clean data file so that you now have a clean version of the file created alongside the outputs of breaches_per_month, but in our case we obviously don't need it for anything else so not key but yeah that's of course up to you. Thanks