I often download data as .csv files. The dates are usually formated as mm/dd/yyyy. I want to convert them to the format yyyy-mm-dd. I've used awk in the last instance (with the split() function) but didn't make note of exactly how it was working so I could modify it for different source date formats. I didn't get it working today on a new file, even after reading about the split() function.
I also read about the match() function as that was used in a stack exchange thread. I couldn't get it to work, either. All the threads I found on my web search have original dates formatted mmddyyyy and needed to have that string separated with dashes or forward slashes separating month, day, and year. I keep dates in ISO 8601 format (yyyy-mm-dd) and would like a way to do this with sed, awk, python, or perl. I need it commented so I can adjust it for the number of fields in each line and the position of the date field. An example of the current data file: BB Wood Products LLC|2017-094|Scappoose|Notice of Civil Penalty Assessment||7/31/2017|8400.00 The date to be modified is in the sixth field. I'm looking to learn how to do this conversion that's adaptable to all data files needed adjustment. TIA, Rich
