* 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.