Comment by BiteCode_dev

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.