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The Current Challenges With Using Linux On Airplanes
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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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I agree that a small, special purpose OS would probably be more suitable for safety-critical systems. On the other hand I highly doubt that the safety-culture is better at Boeing than in the Linux ecosystem.
I'd expect it to be about the same, with 737 MAX, yes, on one side and too many examples on the other.
You forget to take into account that every Boeing employee knows they are building systems that can kill people if things go wrong. Meanwhile on Linux a lot of bugs really don't matter that much, especially in -rc and otherwise non LTS versions.
Taking that into account their safety culture is much worse.
For a company building bloody airplanes - yes, I totally agree.