No one person can know exactly how every module is built, nor how the code interacts between the modules. As embedded projects have evolved to complex computer systems, build technology brings the various modules together, and requirements around safety become increasingly complex to verify. In particular, the world of safety critical embedded software presents a fundamental blocking issue, because of the traceability demands of the standards with which such systems are required to comply. The relative rarity of Linux on these desktop machines acts as a reminder that Linux’s rise to prominence is not equally distributed across all sectors and environments. Familiar Linux desktop distributions such as Debian, Fedora and Ubuntu supplement that Linux kernel with supporting system software and libraries provided by the GNU project. Strictly speaking, the term “Linux” refers specifically to the kernel – the part of the operating system that facilitates interactions between the hardware and the software.
Linux is simply an operating system like any other, but its free, open source status offers obvious commercial advantages. Is using Linux with critical applications like mixing oil and water? (Image Source: Aakash Kumar/Pixahive)
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