for years i've felt that i should be able to pipe numerical output into some
unix command like so

   cat list | mean
   cat list | sum
   cat list | minmax

etc.

and have never found one.  right now i'm building a ruby version - before i
continue, does anyone know a standard unix or ruby version of this?

cheers.

-a
-- 
if you want others to be happy, practice compassion.
if you want to be happy, practice compassion.  -- the dalai lama