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that's very odd indeed. what you should see is this: mjames@imogene:~> dcgrib2 gem.gem < gfs.t12z.pgrbf12.grib2 Opening WMO Originating Center Table wmocenter.tbl... Opening WMO GRIB2 Parameter Table g2varswmo2.tbl... Opening Local GRIB2 Vertical Coordinate Table g2vcrdncep1.tbl... Opening Local GRIB2 Parameter Table g2varsncep1.tbl... Opening WMO GRIB2 Vertical Coordinate Table g2vcrdwmo2.tbl... mjames@imogene:~> ls -al gem.gem -rw-r--r-- 1 mjames ustaff 17370624 2014-08-26 13:44 gem.gem Can you tell me more about your system? What version of GEMPAK? What operating system? And what is returned by the command "ldd $OS_BIN/dcgrib2" ? Michael James Unidata Program Center Boulder, CO > I tried doing what you say and still have the same problem. > > -Jason > > > On 08/26/2014 07:39 PM, Unidata GEMPAK Support wrote: > > > >> dcgrib2 -d file.log < gfs.t18z.pgrbf09.grib2 > > > > > > Hi Jason. You almost have it. The correct command is > > > > dcgrib2 -d file.log gfs.gem < gfs.t18z.pgrbf09.grib2 > > > > > > > > Michael James > > Unidata Program Center > > Boulder, CO > > > > Ticket Details > > =================== > > Ticket ID: RNK-269103 > > Department: Support GEMPAK > > Priority: Normal > > Status: Open > > > > Ticket Details =================== Ticket ID: RNK-269103 Department: Support GEMPAK Priority: Normal Status: Open