Other operating systems do not have all of the concurrent mechanisms that Linux has....

Concurrency is a term used in software engineering to describe techniques and processes that enable a computer to do many tasks at once or at least seem to do so.

To do this, new hardware and software features were necessary.

Linux handles real-time signals and integrates all prior UNIX concurrency mechanisms.

An operating system (OS) is a piece of software that manages the hardware and software resources of a computer while also offering standard functionality to other programmes.

Time-sharing operating systems may include accounting software to measure the cost of processing time, storage, printing, and other resources.