Fan running all the time because xinetd running over 80% all the time. Anyone else have the same problem?

Not as far as I know. I removed it, restarted and the problem is gone. Everything seems to be working properly now. A search of other files created on the same date did not return any clues so I have no idea where it came from.

Thank you.

I am too. When I reported it to Apple in the bug reporter, they never said anything about it, just asked for a copy to check the version number and a copy of the file. Never heard anything else. I checked the config file and there are no hints as to what might have installed it. I did some further checking to try to find other files installed at the same time and I also found tcpmux. But that was it. Nothing else. File activity around that date seems to be normal otherwise. Wonder if it was from an old software install that I subsequently deleted. I removed tcpmux as well. It was not listed in the activity monitor. If you have any ideas, I am all ears.

Mystery solved. It turns out that xinetd and tcpmux are both installed by a RIP I use called ImagePrint. Why they use them, I do not know. I did an update today for Sierra compatibility and it reinstalled both of them.

Thanks again for your help.

First you have to locate the file. I found it in /usr/local/bin. In my case, it was a third party piece of software that installed it so I had to search for it. I used sudo find / -type f -name xinetd. This told me where it was and also where the xinetd.d directory was with the config file.

After locating the files, I removed them and the software I am using still seems to be working fine. I am not sure what they are using it for. I will try their SIerra compatible update to see if they fixed the issue.