Linux is an Operating System like Windows, or OS X. Where are you seeing Linux that you don't think you should be seeing Linux?
Hi Kari. Yes, please don't post private information publicly. I normally don't work on Saturdays, but made an exception to clean up the links and your phone number that you posted.
Looking at the screenshots that were in the links you provided, I didn't see anything that would lead me to believe you've been hacked or are otherwise running something that shouldn't be run from your phone. Perhaps I missed something. Can you explain further?