CDO

Hi

Is it possible to sum all variables of a file without repeating the selection operator for every variable and without using expr?

fin=cdo-2.5.2/test/data/ap2pl_l90_ref
cdo -L -enssum -selname,ta $fin -selname,wa $fin ~/fout   # works but repeated selname 
cdo -L -expr,'mysum=ta+wa' -select,name=ta,wa $fin ~/fout # works but expr
cdo -L -enssum -select,name=ta,wa $fin ~/fout             # does not work; just selects but does not sum

btw: it would be great if you could sometimes reply to your millions of open issues ._.