There are additional options available. to rpm which are detailed in the rpm(8) man page. The contents of the rpm(8) man. page should be thoroughly understood by the System Administrator. Return to: RedHawk Linux Frequently Asked Questions.
You can assess a fever based on symptoms without a thermometer while also looking at potential causative factors. So things to look out for are feeling extremely hot causing whole body sweats, followed by feeling insatiably cold, requiring layers of bedding and experiencing whole body shaking (rigors).
Studies have shown that ear thermometers actually miss fevers up to 50% of the time. I have always used just a regular thermometer under the arm on my kids, I use store brand, and they work just as well as name brand. All you need to do is add 1 degree when taking it under the arm.