gistfile1.rb

namespace :csv do
  desc "Makes sure all rows have a trailing ;"
  task :cleanup do
    file, new_file = ENV['FILE'], ENV['NEWFILE']
    raise "Provile valid FILE and NEWFILE, e.g. FILE=./lib/prospects.csv" unless file or new_file
    lines, new_file = File.open(file), File.open(new_file, 'wb')
    
    lines.each_line do |line|
      unless line.strip.last == ";"
        line = line.strip + ";#{$/}"
      end
      new_file << line
    end
    
    new_file.close
  end
end