The underscore files store the resource fork when copying to to a non-MacOS filesystem: https://en.wikipedia.org/wiki/Resource_fork https://en.wikipedia.org/wi

The underscore files store the resource fork when copying to to a non-MacOS filesystem: https://en.wikipedia.org/wiki/Resource_fork https://en.wikipedia.org/wiki/Resource_fork https://en.wikipedia.org/wiki/AppleSingle_and_AppleDouble_formats https://en.wikipedia.org/wiki/AppleSingle_and_AppleDouble_fo...