We can handle spreadsheets easily with the help of SPREADSHEET ruby gem.

Installation:

> gem install spreadsheet

Basic Code:

require ‘rubygems’
require ’spreadsheet’

book = Spreadsheet::Workbook.new
sheet1 = book.create_worksheet  :name => (‘Names’)
sheet1[0,0] = ‘Raveendran’
sheet1[0,1] = ‘Age : 24′

sheet1[1,0] = ‘Jazzezravi’
sheet1[1,1] = ‘Age : 25′

sheet1[2,0] = ‘Jazzez’
sheet1[2,1] = ‘Age: 26′

book.write(‘F:\ravi\sample.xls’)

For more details –  http://spreadsheet.rubyforge.org/