A Delta RPM contains the difference between an old and new version of a package.
This means that only the changes between the installed package and the new one are downloaded reducing network traffic and bandwidth consumption.
OS's did not mention Fedora even once, not even a URL.
If you go to will see a graphical link on the main page to the Fedora Project, but it's certainly not prominent.
I have installed Fedora Core 1 (Yarrow) to see what has changed between it and Red Hat Linux 9 and to get a feel for this new and powerful Linux operating system.
For some people, the name Fedora will not be a familiar name, for others (Red Hat Linux or OS enthusiasts), Fedora could (In some ways) be considered to be the 'new' Red Hat Linux 9.x or 10 release, the not so long awaited sequel to Red Hat Linux 9, which came out in late March 2003.
Exec-shield lessens the risk of the dreaded "buffer overflow" that most viruses and attacks use to compromise your system.
However, as long as you're up-to-date with your updates, you shouldn't be in any more danger after you disable exec-shield.It is the recommended command line upgrade method for Fedora 21 and later (Except Atomic Host, which uses rpm-ostree; for that see Atomic_Host_upgrade).DNF system upgrade can upgrade your system to a newer release of Fedora, using a mechanism similar to that used for offline package updates.However, Fedora Core 1 is not Red Hat Linux 10 (as I try to explain below), and to quote from the front page of the Fedora Project website: Introduction 'The Fedora Project is a Red-Hat-sponsored and community-supported open source project.It is also a proving ground for new technology that may eventually make its way into Red Hat products. In short, Red Hat has decided to focus strongly on the Enterprise market (follow the money, there is nothing wrong with that) and as a result has discontinued marketing or producing new versions of what many considered to be its 'home user' freely downloadable versions of Linux, but all is not lost, not by a long shot.To simplify things as much as I can, Red Hat does offer stable, corporate Desktop versions of Red Hat Linux ( which are available at cost, but come with phone based/web based support options, Fedora on the other hand is freely downloadable, will change often (every few months) and will have much more limited support options (for companies) due to its' price tag and quickly evolving nature (think latest gizmos, latest add-ons).