I have been having trouble running the 'at' command as in this question https://stackoverflow.com/questions/56548065/wanting-to-run-a-script-at-a-certain-time-on-macos-instead-returns-job-4-at-we
I tried running the command in the format given in the answer for this qyestion: Why are my at jobs running immediately on OS X?
and it still just seems to immediately print
job 27 at Wed Jun 12 00:15:00 2019
and so I wait for the time given and nothing happens.
I've learned that I may need to enable to atrun daemon as in here Mac OS X: at command not working
However I have been to the directory of /System/Library/LaunchDaemons/ and there is no com.apple.atrun.plist file.
I unload and reload the file with
sudo launchctl unload -F /System/Library/LaunchDaemons/com.apple.atrun.plist
and
sudo launchctl load -F /System/Library/LaunchDaemons/com.apple.atrun.plist
and still don't see it there. And I still can't seem to execute the 'at' command.
Is there anything I'm missing? I'm running macOS Mojave version 10.14.4.