RTOS - Real time operating System

Linux can be used as a real time operating system ( RTOS ) for the most situations like:
- mobile telephones
- household appliance controllers
- industrial robots
- spacecraft
- industrial control and scientific research equipment
- etc.

You can find on Linux real time in the standard off-the-shelf 2.6 kernel. Reading this you will know some of the Linux architectures that support real-time characteristics and what it really means to be a real-time architecture.