I am working with a netCDF file that has a lot of variables and I need to extract only those that start with the string Var_.
The only answers that I found that came close to what I am asking were done by using ncdump however I need to do that with ncks.
I tried the following command but it ended up extracting every single variables that were in the input file instead of the ones starting with Var_ only.
ncks -C -v time,lon,lat,Var_* input.nc output.nc #(I also need the time, lon and lat variables)
I tried to do it that way because the numbers of variables in the input file can increase/decrease which is why I can't write the variables names one by one in my script.
Is there a way to do that? Also, this is for a bash script that I am writing.
Your command would have worked had you used regular expression (RX) syntax (documentation) rather than shell-globbing syntax in the variable list. NCO need RX syntax for variable/attribute/dimension lists contained in files, and only uses shell-globbing for filenames/paths that the shell sees. Re-try with something like
ncks -C -v time,lon,lat,^Var_.? input.nc output.nc