<slaps forehead>Yep! ... I should have known that all the way back from my FORTRAN days...
My faith in {humanity|Ruby} has been restored.

> * Ted (ted / datacomm.com) [27 Nov 2002 19:57]:
> > sprintf ("%d days %02d:%02d:%02.6f",@DD,@hh,@mm,@ss)
> > produces:
> > 537 days 22:05:10.081386 until Teddy gets his learner's permit
> > 537 days 22:05:9.081456 until Teddy gets his learner's permit
> 
> > I intended for the seconds to be right-justified and zero-filled.
> 
> The '.6' part is the number of digits past the decimal point.
> The '02' is the width of the entire field.
> 
> Thus what you're wanting is:
> 
>   %09.6f
> 
> % ruby -e 'printf "x%09.6fx\n", 9.081456'
> x09.081456x
> 
> 
> 
> cheers,
> -- 
> Iain.
>