1. Make a copy of mslp.nc, a netCDF file of any type, to mslp-copy.nc, a netCDF file of the same type. This checks that all the metadata and data are consistent, and that the data can all be accessed using the netCDF API.

       nccopy mslp.nc mslp-copy.nc
     

2. Check compressibility of a test file, test.nc, by using nccopy to copy it to a file in which all variables are compressed at level 1. Then check if adding the shuffling option improves compression.

       nccopy -d1 test.nc testd1.nc        # compress data in test.nc
       nccopy -d1 -s test.nc testd1s.nc    # shuffle and compress data in test.nc
       ls -l test.nc testd1.nc testd1s.nc  # check results
     

   output from commands above
3. Convert a netCDF-4 classic model file to a netCDF-3 classic file, uncompressing any compressed variables.

    nccopy -k1 testd1s.nc test_classic.nc

4. Download just the variable named "Total_precipitation" and relevant metadata from an OPeNDAP server dataset into a netCDF file named precip.nc.

    nccopy
     'http://thredds.ucar.edu/thredds/dodsC/fmrc/NCEP/GFS/Hawaii_160km\
     /NCEP-GFS-Hawaii_160km_best.ncd?Total_precipitation' precip.nc 

   Note: use quotes, because of '?' in input name.

2012 Unidata NetCDF Workshop > NetCDF Utilities