rookie question: how to do in the command window of Windows system what "echo" does in Unix shell?

Dear Radiance experts,

I'm new to Radiance and appreciate if you can help me on this simple

The following commend in the Shell of Unix will get the horizontal
irradiance value due to the uniform sky as defined in the sky_uni.oct file:

% echo "0 0 0 0 0 1" | rtrace -h -r+ -w -ab 1 sky_uni.oct

May I ask in order to do the same thing what DOS commands I should use do
the same thing in the command window of a Windows XP or Vista system when
I'm using the Desktop Radiance?

Thank you!