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Will Linux’s New run0 Command Run sudo Out of Town?
(www.howtogeek.com)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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RedHat is not restricting access to any upstream project. They package things in extremely stable form, which means they need to manage like all the software themselves and do tons of backports, as normally software just releases new versions.
They restrict access to these packages.
So yes, their 5 years old systemd with backported security fixes may be restricted. But not the normal systemd you can install anywhere.