i keep *trying* to move from portupgrade to portmaster

[Sandra Kachelmann]

I've been using ports-mgmt/portupgrade pretty much ever since it
started to exist. Unfortunately portupgrade seems to be pretty much
"abandonware" so I've been told to move on to portmaster. Despite the
very long manpage I can't seem to be able to achieve the following
thing with portmaster:

$ portupgrade --batch -a

If I issue this command I know exactly that I can go out, have a
drink, cook some dinner and unlock my workstation the next day and
find that everything completed unless a port failed to build. With
portmaster I get asked a s*t load of interactive questions, whether I
want to delete some package, whether it's really okay to pull in all
the dependencies and so on.

Can someone spoonfeed me the command I need to issue with portmaster
in order to achieve the same thing as with

$ portupgrade --batch -a

Is that even possible?

$ portupgrade --batch -a

Thanks in advance!

Sandra