key property
Fully compatible with POSIX 1.0 standard.
This makes it possible to run common DOS and Windows programs under Linux through corresponding simulators. This laid the foundation for users to switch from Windows to Linux. When many users consider using Linux, they are thinking about whether the common programs under Windows can run normally, which dispels their doubts.
Multi-user, multi-task
Linux supports multi-users, and each user has his own special rights to his own file device, which ensures that each user does not affect each other. Multitasking is the most important feature of modern computers. Linux allows multiple programs to run independently at the same time.