Re: What is agetty, and why can't it be stopped?

[bw <bwtnguy@yahoo.com>]

In-Reply-To: <[🔎] 201906052204.09390.gheskett@shentel.net>
<snip>
>So what I'd like for it to do, is be totally silent during the rest of 
>this machines boot, and once a user, me, is logged in, go away just as 
>silently, freeing the only serial hardware port for my own use.
...

I think the first place I'd look is: 

man logind.conf 

there may be something there to help you figure it out.  Then look into 
override if necessary with something like:

systemctl edit getty@.service