Why is Linux stable?

Linux is stable because it does not have such a huge kernel and endless loopholes like other operating systems; the Unix design system shared by Linux has been tested in long-term practice, and the development model of Linux development source code ensures that any System vulnerabilities can be discovered and corrected in a timely manner.

#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

Why is Linux stable?

The stability of Linux is due to the fact that it does not have such a huge kernel and endless loopholes like other operating systems. Investigation data shows that Linux has the same reliability as other Unix systems and large operating systems such as VMS and IBM mainframes. The reason is not difficult to find. The stability of the system mainly depends on the structure of the system design. The structure of computer hardware has not changed significantly since it was designed in 1981, and continuous backward compatibility makes those application software with extremely poor programming styles reluctantly ported to the latest version of Windows. This makeshift software development model greatly hinders improve system stability. Another crash-prone system, the Macintosh, is as famous for its lack of memory usage protection and lack of preemptive multitasking as it is for its user-friendly interface. It's surprising that the Macintosh, despite having such major flaws, is not as popular as people. It crashes as often as expected.

The stability of Linux is not an unexpected exception. Stability is a common feature of all large computer operating systems. Only Windows and Mac computers sometimes behave incorrectly. The Unix design system shared by Linux has been tested by long-term practice. Linux has absorbed the experience of the development of Unix systems for nearly a quarter of a century. The Linux operating system embodies the design concept of the most modern operating system and the design that can withstand the test of time. plan. The most striking thing is the development model of Linux development source code, which ensures that any system vulnerabilities can be discovered and corrected in time.

As IBM says on its website, Linux is a stable, powerful and worth-using operating system.

Main features of Linux

Basic idea

The basic idea of ​​Linux has two points: first, everything is a file; second, every Documents have a definite purpose. The first one is that everything in the system is boiled down to a file, including commands, hardware and software devices, operating systems, processes, etc. For the operating system kernel, they are all regarded as files with their own characteristics or types. . As for Linux being based on Unix, it is largely because the basic ideas of the two are very similar.

Completely free

Linux is a free operating system that users can obtain for free through the Internet or other channels, and can modify its source code at will. This is something other operating systems cannot do. It is precisely because of this that countless programmers from all over the world have participated in the modification and writing of Linux. Programmers can change it according to their own interests and inspirations. This allows Linux to absorb the essence of countless programmers and continue to grow.

Fully compatible with POSIX1.0 standard

This makes it possible to run common DOS and Windows programs through corresponding emulators under Linux. This lays the foundation for users to switch from Windows to Linux. When many users consider using Linux, they think about whether programs that were previously common under Windows can run normally, and this eliminates their doubts.

Multi-user, multi-tasking

Linux supports multiple users. Each user has its own special rights for its own file device, ensuring that users do not affect each other. Multitasking is one of the most important features of modern computers. Linux can enable multiple programs to run simultaneously and independently.

Good interface

Linux has both character interface and graphical interface. In the character interface, users can input corresponding instructions through the keyboard to perform operations. It also provides an X-Window system similar to the Windows graphical interface, which users can operate using the mouse. The X-Window environment is similar to Windows. It can be said to be a Linux version of Windows.

Support multiple platforms

Linux can run on a variety of hardware platforms, such as platforms with x86, 680x0, SPARC, Alpha and other processors. In addition, Linux is an embedded operating system that can run on handheld computers, set-top boxes or game consoles. The Linux 2.4 kernel released in January 2001 has fully supported the Intel64-bit chip architecture. At the same time, Linux also supports multi-processor technology. Multiple processors work at the same time, greatly improving system performance.

Linux system advantages

Open source code

Linux is composed of many microkernels, and its source code is completely open source;

Network functions Powerful

Linux inherits the characteristics of Unix and has very powerful network functions. It supports all Internet protocols, including TCP/IPv4, TCP/IPv6 and link layer topology programs, etc., and can utilize Unix networks Features develop a new protocol stack;

system tool chain is complete

Linux system tool chain is complete, a suitable development environment can be configured with simple operations, which can simplify the development process and reduce simulation during development Tool barriers make the system highly portable.

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