Take a look at this screen snapshot of my Macbook Activity Monitor. Of interest is the top three processes; cut, grep, and sh. These processes keep flashing on, and turning off. They'll be on for about a second, off for about 5 seconds, and then on again. The one time I was able to inspect one, it said the parent process was terminated. Is this a virus or malware trying to start in MacOS? Anybody seen anything like this before?