Well, after all, it never asks for one.
Now you may ask, “What if I update the system? Do I need to reboot it?”
Here’s the thing – Linux is a very, very sophisticated operating system, and that means once you have run “yum” or “apt-get”, the operating system will simply take care of the rest for you.
Like leaving old binary images running in memory:
Image courtesy of Linsuxoid.