postgres connection with port option in shell script

Hi,

I want to get postgres connection in script file. I am executing
below command and successfully getting connected ---

psql postgresql://$USER:$PASSWORD(at)$HOST/$DATABASE <<END

select * from abc;

This is executing with default 5432 port.If postgres is installed to any
other port then port option need to be include here[Don't want to take port
from .pgpass file].

How I can modify this command with PORT option.

Thanks