What are the advantages of Linux?

Now Linux is getting more and more popular, and many programmers are using this operating system. Many newcomers also want to learn this system, but most of the newbies do not know the main features of this system. Today, I will talk to you about what Linux is and its main advantages.

what is linux

Linux is a set of Unix-like operating systems that can be freely used and distributed. It is a multi-user, multi-tasking, multi-threaded and multi-CPU operating system based on POSIX and UNIX. It can run major UNIX tools, applications and network protocols. It supports 32-bit and 64-bit hardware. Linux inherits the network-centric design idea of ​​Unix and is a multi-user network operating system with stable performance.

The Linux operating system was born on October 5, 1991 (this was the first official announcement). There are many different versions of Linux, but they all use the Linux kernel. Linux can be installed on a variety of computer hardware devices, such as cell phones, tablets, routers, video game consoles, desktop computers, mainframes, and supercomputers.

Strictly speaking, the word Linux itself only refers to the Linux kernel, but in fact people are used to using Linux to describe the entire operating system based on the Linux kernel, using various tools and databases of the GNU Project.

The basic idea of ​​Linux

There are two points: first, everything is a file; second, every software has a clear purpose. The first is that everything in the system boils down to a single file, including commands, hardware and software devices, operating systems, processes, etc. To the operating system kernel, they are treated as files with their own characteristics or types. As for saying that Linux is based on Unix, it is largely because the basic ideas of the two are very similar.

Linux is 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 can't do. Because of this, countless programmers around the world have participated in the modification and writing of Linux, and programmers can modify according to their own interests and inspiration, which makes Linux absorb the essence of countless programmers and grow continuously.

Fully compatible with POSIX1.0 standard

This makes it possible to run common DOS and Windows programs under Linux using corresponding emulators. This lays the foundation for users to migrate from Windows to Linux. When many users consider using Linux, they will consider whether common programs under Windows can run normally, so as to dispel their doubts.

Multi-user, multi-task

Linux supports multiple users, and each user has his own special permissions to his own file device, which can ensure that each user does not affect each other. Multitasking is one of the most important functions of today's computers. Linux allows multiple programs to run independently at the same time.

nice interface

Linux has both a character interface and a graphical interface. In the character interface, the user can input corresponding commands through the keyboard to operate. It also provides an X-Window system similar to the Windows graphical interface, and users can use the mouse to operate. In the X-Window environment, it is similar to Windows, it can be said to be the Linux version of Windows.

Supports multiple platforms

Linux can run on various hardware platforms, such as x86, 680x0, SPARC, Alpha and other processor platforms. Also, Linux is an embedded operating system that can run on handheld computers, set-top boxes or game consoles. The Linux2.4 version kernel released in January 2001 has been able to fully support the Intel 64-bit chip architecture. At the same time, Linux also supports multi-processor technology. Multiple processors work at the same time, greatly improving system performance.