> This is of course not robust for general CSV files, but I don't think OPs marcel is either. A robust solution requires a proper CSV parser. I haven't tested

> This is of course not robust for general CSV files, but I don't think OPs marcel is either. A robust solution requires a proper CSV parser. I haven't tested corner cases, but marcel relies on the python csv module, which is probably better than any initial attempt at a parser that I could write in an hour. This is what I meant about sublanguages. Many people, (myself included), would need to go to the man pages to find the necessary arguments to awk, sort, and cut. I find it much easier to just write a little Python, even if the end result involves more typing.