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This article mainly introduces the main characteristics of Unix, has a certain reference value, friends in need can refer to. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

Yes. Unix system is a multi-user, multi-task operating system, most of which is written in C language, provides rich and carefully selected system calls, provides a powerful programmable Shell language, that is, shell language as the user interface, and adopts tree file system so as to have good security, confidentiality and maintainability.

Correct, unix is a multitasking operating system.

Unix is an operating system that appeared in the early 1970s. It can be used not only as a network operating system, but also as a stand-alone operating system. Unix has been widely used as a development platform and desktop operating system. At present, it is mainly used in engineering applications, scientific computing and other fields.

The main features of Unix are:

Unix system is a multi-user, multi-task operating system, most of which is written in C language, provides rich and carefully selected system calls, provides a powerful programmable Shell language, that is, shell language as the user interface, adopts tree file system, so it has good security, confidentiality and maintainability, and provides a variety of communication mechanisms. The virtual storage management is realized by using the memory management mechanism of process exchange and the storage management mode of request paging. But Unix does not take "domain" as a unit to realize the centralized management of network resources, which is the characteristic of Windows NT.

Features:

UNIX system plays an important role in the history of computer operating system. It does inherit and transform the existing technology meticulously, cautiously and selectively, and it has developed in the overall design concept of the operating system, which makes it so successful. The main characteristics of UNIX system are shown in the following aspects:

The main contents are as follows: (1) the structure of UNIX system is divided into two parts: core program (kernel) and peripheral program (shell), and the two are organically integrated into a whole. The core part undertakes the functions of each module within the system, that is, processor and process management, storage management, device management and file system. The core program is characterized by well-designed, concise and capable, only needs to occupy a small amount of space and resident memory, in order to ensure the efficient operation of the system. The peripheral part includes the user interface of the system, the system utility and the application program, and the user uses the computer through the peripheral program.

(2) the UNIX system provides a good user interface and has the characteristics of easy to use, complete functions, clear and flexible, easy to expand and modify. The use of UNIX system has two forms: one is the operation command, namely Shell language, which is the interface through which the user can interact with the system through the terminal; the other is the user program-oriented interface, which provides services to users not only in assembly language, but also in C language.

(3) the file system of UNIX system is a tree structure. It consists of a basic file system and a number of detachable sub-file systems, which can not only expand the file storage space, but also conducive to security and confidentiality.

(4) the UNIX system unifies the processing of files, file directories and devices. It accesses files sequentially or randomly as character streams regardless of any record, and makes files, file directories and devices have the same syntax and semantics and the same protection mechanism, which not only simplifies the system design, but also facilitates users' use.

(5) the UNIX system contains very rich language processing programs, utility programs and tool software for developing software, which provides users with a quite complete software development environment.

(6) most of the programs in UNIX system are programmed in C language, and only about 5% of the programs are programmed in assembly language. C language is a high-level programming language, which makes the UNIX system easy to understand, modify and expand, and has a very good portability.

(7) the UNIX system also provides a simple communication function between processes.

Thank you for reading this article carefully. I hope the editor will share what the main features of Unix are helpful to everyone. At the same time, I also hope that you will support us, pay attention to the industry information channel, and find out if you encounter problems. Detailed solutions are waiting for you to learn!

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