Thanks to all the comments in this threads, I now have "sudo apt install rename detox" in my install script, and: normalize_names() { rename "s/-/_

Thanks to all the comments in this threads, I now have "sudo apt install rename detox" in my install script, and: normalize_names() { rename "s/-/_/g" * detox -s lower * } in my .bashrc. I've thrown some edge cases at it, and it handles it super well. It deals with consecutive "_", remove leading garbage, normalize unicode, and even prevents naming conflicts by opting out early. Thanks you.