mars << EOF retrieve, levelist=500, stream=smma, system=2, method=1, number=0/to/4, time=00, levtype=pl, expver=1, param=129, fcmonth=1/2/3/4/5/6, class=od, date=20020801, type=fcmean, TARGET="$SCRATCH/plevel[levelist]_129_2002_08start_em[number].grib" EOF