macOS: Double click on a file and display the output from a CLI command on the file?

There is a file type called "netCDF". My goal is to be able to double click on a netCDF file on Finder and see the text output from a CLI command to which the filename is given. Specifics: There is a command-line command that displays the table of contents of a netCDF file:

`
$ ncdump -h yourfile.nc

` This command shows the table of contents of the netCDF file to the current terminal. **How can I see the same output when I double click on the file on Finder?** **Edit: The following is a description of a failed approach.** I have made some progress toward a solution. Following this thread https://apple.stackexchange.com/questions/224394/how-to-make-a-mac-os-x-app-with-a-shell-script I've been able to create a macOS "app" which is actually a shell script:

`sh
#!/bin/sh
/usr/local/bin/ncdump -h "$@"

` So far, I've been able to verify that I can invoke this "app" from Finder and that the above shell script is actually run. But, I found that the shell script doesn't get the filename as a command line argument. (You can see what's going on by modifying the line to /usr/local/bin/ncdump -h "$@" > $HOME/tmp/logfile.txt 2>&1) So, I have two specific questions 1. How can a shell script (as app) get the filename when invoked from Finder? 2. To which GUI app should it send its stdout and how?