You generally don't. Thus the "proof of concept". Though to be fair a lot of the standard C libraries have there own "Linux" version in the Kernel so the OS c

You generally don't. Thus the "proof of concept". Though to be fair a lot of the standard C libraries have there own "Linux" version in the Kernel so the OS can do things without using the OS... http://lxr.linux.no/linux+v4.10.1/include/linux/ http://lxr.linux.no/linux+v4.10.1/include/linux/