We were trying to run fllowing code in rake file:

directory "tmp" 
file "hello.tmp" => "tmp" do
 sh "echo 'Hello' >> 'tmp/hello.tmp'"
end

We have taken this code from http://jasonseifer.com/2010/04/06/rake-tutorial

But, since we are working on windows commands like'sh','echo' wont work.. according to the explanation given for the above code, it should first create a directory 'tmp' and then create a file 'hello.tmp' which will have 'hello' as its text..

Firstly, how can we do this for windows?
and Secondly, a file with extension '.tmp' sounds quite wierd.. what does 'hello.tmp' specifies? Does it simply mean that 'hello.tmp' is a text file in 'tmp' directory?