Export a Sheet from a .xlsx file to a .csv file. excel2csv.exe excelfilename csvfilename [options]
Note: excelfilename, csvfilename and sheet: is required.
sheet : Sheet1 - (required) set the sheet name to export.
row : 0 - the row number to start from
col : 0 - the columns number to start from
fields : "name1,name2,name3" - if set the field names will be the first row of the csv file.
select : "A,B,C" - if set exports only the select columns names.
c:\data\export2csv data.xlsx data.csv sheet:Sheet1 row:1 col:1
also see 'export.bat' file for an example.