Ruby读写文件

1. 读取

File.open("C:\\test\\dir1\\filename", "r") do |file|
    file.each_line do |line|
        puts line
    end
end

 2. 创建并保存

file=File.new('D:\\test\\ruby.txt','w')
file.puts "first line"
file.puts "second line"
file.close