in reply to
Excel to csv
Spreadsheet::Read comes with xlscat and xls2csv.
$ xlscat -c file.xls > file.csv
$ xls2csv file.xls
xlscat and xls2csv are the tools that I would use and recommend.
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
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