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RHEL no longer open source
(lemmy.world)
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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if the GPL is the only license, then yes. however, if there are additional licenses applied which don't conflict with GPL, you may face restrictions on, say, distribution and sales of the code base, as Red Hat has done.
In effect, it's open source, but access is restricted to paying customers of RHEL, and they'e not allowed to redistribute or sell it per the additional license they agree to when they purchase it.