Shell script to turn on Autofilter in Excel.

Hi,
I have a shellscript that produces a csv that can be opened in Microsoft Excel. It has two columns and about 10 rows in each column, so only twenty cells (at the moment). When the user opened the csv, I wanted it so autofilter was already turned on in columns A1 and B1 (and potentially C1, D1 etc.)

Please can somebody help.

Cheers,
Steve

Sorry but .csv files don't support filtering, that's .xls and .xlsx only.