Keep stdout on screen AND in File

Question

I open a command prompt window in XP. There I run a command line program (foo.exe) and I want to capture stdout in a file. So I run it like this:

foo > fooResult.txt

However, at the same time I would like stdout to still be fed to the screen of the command prompt window. What is the syntax for that?

Answer 1

foo |teefooResult.txt

Answer 2

If you were using Linux you could use tee, like this:

foo | tee fooResult.txt

This would do what you want. Unfortunately (in this sense only, lest I upset somebody), you're using Windows. Fortunately, there is a windows version of tee here or here.