I am trying to install Xenomai along with the Linux kernel version 4.4.43 in my PC. It is currently running Ubuntu 16.04 LTS. I am new to the whole Linux enviroment and from what I read online doing
sudo apt-get update seemed like a good thing to do first. But I keep getting the same error saying
Failed to fetch .......... 500 Operation not permitted I really have no idea what I am doing wrong.
In addition to this, I need to install OpenSSL for Xenomai. But
sudo apt-get install libssl-dev tells me that it could not find the package.
I have tried to change the
sources.list to use old source, but there was no change. The
other software page has all options selected as well.
I have attached both images below in order. Please advice as to what I should do next.
EDIT: I have tried multiple different servers, including archive servers, but there is not difference in the output. What could be something on my end that is going wrong?