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Steam On Linux Usage Spikes To Nearly 2% In July, Larger Marketshare Than Apple macOS
(www.phoronix.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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Looks like it was around the end of March when Valve announced the date they'd end support for Win7 and Win8. So perhaps a part of the Windows userbase went to Linux. If for fear, as a final push to drop Windows, etc., I don't know, but perhaps they may have influenced.