Resumen
Linux today has millions of users, thousands of developers and a growing market. It is used in the embedded systems, it is used to control robotic devices, it has flown on the space shuttle. Linux has succeeded not because the original goal was to make it widely portable and widely available, but because it was based on good design principles and a good development model. This strong foundation made portability and availability easier to achieve. But Linux's approach to portability has been good for the development community surrounding Linux as well. Decisions that motivate portability also enable a large group to work simultaneously on parts of Linux without the kernel getting beyond one's control. Some particular application areas will continue to drive kernel development. Web serving has always been an interesting problem, because it's the one real application that is really kernel intensive. The most exciting developments for Linux will happen in user space, not kernel space. Changes in the kernel will seem small compared to what's happening further out in the system.