Yes, I can tell 
Homework (assigned work) is always like this. You are presented with a solution which ~99% of all system admins (in an actual paying job where there is little time to waste) would use in the same situation; but you refuse to accept those solutions because your instructor told you to do it in a certain way in an assignment.
You must disclose homework when posting here before you post.
So, in the future @nmkl2021, disclose (announce) you are working on homework when you first post your question, or you will be prohibited from posting here again.
Thanks for following our rules.