Farrel Lifson DE I. P.

FL> Kernel#exec sounds like what you need.
This way produced the same result:
    exec "notepad result.txt"
- ruby.exe and notepad.exe were both present.

And this way worked just as I want:
    exec "start notepad result.txt"
- ruby.exe closed and notepad.exe is active

Thank you!

-- 
I. P.     2007-03-04T17:01