> I don't know how old "letsencrypt-renew" is and what it does.

It's the five lines below "the script:"

I'm sorry mister perfect. I officiously meant "certbot".

I wasn't making fun of you. It wasn't obvious that's what you meant at all, because you said you didn't know "what it does". I'm sure you know what certbot does, so I thought you misinterpreted the post.