How to register a shell script as the main application for a given file extension
This seems to work fine from a terminal if you do xdg-open foo.ext, however it doesn't seem to work in Nautilus unless you define your script as default for opening the *.ext file:
- Select such a file,
- Right-click,
- Choose Properties,
- Select the Open With tab,
- Click on Show other applications,
- Select your script (should be The script that manages .ext files),
- Click Set as default, and finally press
- Close.
After I did that, the script started from Nautilus.