The primary command-line options for ncgen are:
[-k file_format] Format of the file to be created 1 => classic 2 => classic 64-bit offset 3 => netCDF-4 4 => netCDF-4 classic model [-l language] Format of the file to be created c => C (full netCDF-4 support) j => Java (netCDF-3 only) f => F77 (netcdf-3 only) [-b] binary output (full netCDF-4 support) filename input CDL file
Example: from foo.cdl, generate a binary netCDF-4 file foo.nc:
$ ncgen -b -k3 foo.cdl
Note: the "-k" option is not needed if the type of outputt file can be deduced from the input. For example, i the input CDL has groups, the output must be a netCDF-4 file, so that's what ncgen will generate.