mason@primenet.com.au writes:

> Yes, but "ps -Uroot" is not a documented form anyway so it can do whatever
> it wants.  "ps -U root" and "ps U root" both work.

Good answer.  Go to the next questions:
    Convert "ps -t p0" into non-dash form.
    Convert "ps -o tt -U root" into non-dash form.

:-)

The non-dash form is not consistent nor complete,
at least in the current implementation.

-- 
itohy