How to pass a multiline arg to exec('some.exe arg')?

[Ian Kelly]

>  btw, is it necessarily to close() osql[1] in order to get res?
>  without close() the script seems is waiting for smth.
>  I'd like to get "res" in a loop:
>  write()
>  read()
>  write()
>  read()
>  ...
>  is it possible?

Yes, call flush() each time you're done writing.