I started working on the embedded industry in the early 90s when other OS'es with the likes of Greenhills and VxWorks. My first introduction to a Unix system w

I started working on the embedded industry in the early 90s when other OS'es with the likes of Greenhills and VxWorks. My first introduction to a Unix system was Caldera Linux in 3 or 4 floppy disks. What call me attention the most compared with other embedded OS was the transparency of the system. We all had our door-stop manuals 10 lbs weight manuals for our embedded OS documentation where a collection of tools like Tornado (In VxWorks) gave us a way to interact with the OS. But Unix, in my understanding, needed no added tool. A kernel, a filesystem a shell... go. Many years a go a developer tried to introduce a patch in Linux to give graphics a leg up because Linux PC Desktop experience lagged behind Windows and Macs. The gate-keepers said no and the guy forked the kernel and went his own merry way. Going back to embedded real-time systems and Unix/Linux efforts like MonteVista and HardHat created smaller leaner footprints that started competing in the embedded field. The OS evolves wells. My lasts embedded projects with Yocto make the point. Unix/Linux, ideas that evolve.