Converting a csv to a workbook.
csv2xlsx -i data1.csv MyWorkbook.xlsx 'My worksheet 1'This creates a new 'My worksheet 1' in the Excel Workbook called 'MyWorkbook.xlsx' with the contents of data.csv.
cat data1.csv | csv2xlsx MyWorkbook.xlsx 'My worksheet 2'This does the same but the contents of data.csv are piped into the workbook's 'My worksheet 2' sheet.