[gradsusr] unable to create idx file.

[Geeta Geeta]

I have to plot GRIB2 data with grads. hence I am using g2ctl script. The problem is that IDX file is NOT CREATED. 
Can someone tell me whats the problem. 
bash-3.2$ ~/g2ctl -0 fnl_20110422_12_00 >2011042212.ctlbash-3.2$ gribmap -i 2011042212.ctlOpen Error:  Data file type invalid  --> The invalid description file record is:  --> dtype grib2   The data file was not opened.File name is:  2011042212.ctlbash-3.2$ The ctl file is created OK. dset ^fnl_20110422_12_00index ^fnl_20110422_12_00.idxundef 9.999E+20title fnl_20110422_12_00* produced by g2ctl v0.0.8.8* command line options: -0 fnl_20110422_12_00* griddef=1:0:(360 x 181):grid_template=0: lat-lon grid:(360 x 181) units 1e-06 input WE:NS output WE:SN res 48 lat 90.000000 to -90.000000 by 1.000000 lon 0.000000 to 359.000000 by 1.000000 #points=65160:winds(N/S)                                                                                                                             dtype grib2ydef 181 linear -90.000000 1xdef 360 linear 0.000000 1.000000tdef 1 linear 12Z22apr2011 1mo* PROFILE hPazdef 26 levels 100000 97500 95000 92500 90000 85000 80000 75000 70000 65000 60000 55000 50000 45000 40000 35000 30000 25000 20000 15000 10000 7000 5000 3000 2000 1000options pascalsvars 138no4LFTXsfc   0,1,0   0,7,193 ** surface Best (4 layer) Lifted Index [K]no5WAVA500mb   0,100,50000   0,3,197 ** 500 mb 5-Wave Geopotential Height Anomaly [gpm]no5WAVH500mb   0,100,50000   0,3,193 ** 500 mb 5-Wave Geopotential Height [gpm]ABSVprs    26,100  0,2,10 ** (1000 975 950 925 900.. 70 50 30 20 10) Absolute Vorticity [1/s]ACPCPsfc   0,1,0   0,1,10,1 ** surface Convective Precipitation [kg/m^2]ALBDOsfc   0,1,0   0,19,1,0 ** surface Albedo [%]APCPsfc   0,1,0   0,1,8,1 ** surface Total Precipitation [kg/m^2]CAPEsfc   0,1,0   0,7,6 ** surface Convective Available Potential Energy [J/kg]CAPE180_0mb  0,108,18000,0   0,7,6 ** 180-0 mb above ground Convective Available Potential Energy [J/kg]CFRZRsfc   0,1,0   0,1,193,0 ** surface Categorical Freezing Rain (yes=1; no=0) [non-dim]CICEPsfc   0,1,0   0,1,194,0 ** surface Categorical Ice Pellets (yes=1; no=0) [non-dim]CINsfc   0,1,0   0,7,7 ** surface Convective Inhibition [J/kg]CIN180_0mb  0,108,18000,0   0,7,7 ** 180-0 mb above ground Convective Inhibition [J/kg]CLWMRprs    21,100  0,1,22 ** (1000 975 950 925 900.. 300 250 200 150 100) Cloud Mixing Ratio [kg/kg]CPRATsfc   0,1,0   0,1,196,0 ** surface Convective Precipitation Rate [kg/m^2/s]CRAINsfc   0,1,0   0,1,192,0 ** surface Categorical Rain (yes=1; no=0) [non-dim]CSNOWsfc   0,1,0   0,1,195,0 ** surface Categorical Snow (yes=1; no=0) [non-dim]CWATclm   0,200,0   0,6,6 ** entire atmosphere (considered as a single layer 		 	   		  
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