...
To get a latitude, longitude, value list, skipping the missing values(=9999)
>>gribCode Block > grib_get_data ../data/reduced_gaussian_model_level.grib2
If you want to define your missing value=1111 and to print the string missing in place of it
>>gribCode Block > grib_get_data -m 1111:missing ../data/reduced_gaussian_model_level.grib2
If you want to print the value of other keys with the data value list
>>gribCode Block > grib_get_data -p centre,level,step ../data/reduced_gaussian_model_level.grib2