DESCRIPTION
Apply the rules defined in rules_file to each grib messagein the grib files provided as arguments.
USAGE
grib_filter [options] rules_file grib_file grib_file ...OPTIONS
-f-o output_grib_file
Output grib is written to output_grib_file.
If an output grib file is required and -o is not used, the output grib is written to filtered.out
-M
-V
-g
-G
-T T | B | A
-7
-v