You're totally right. It should be:
I just looked it up and "superuser" is one word. I'll correct my original post.
Also, as a native English speaker, I'm sorry the language is so weird.
Totally that is what we day ”syou-do” because it's superuser do.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.