what is unix/linux

Unix is ​​a powerful multi-user, multi-tasking operating system that supports a variety of processor architectures. According to the classification of operating systems, it is a time-sharing operating system; while Linux is a set of free-to-use and freely disseminated classes. The Unix operating system is a multi-user, multi-tasking, multi-threading operating system based on POSIX and UNIX.

What is UNIX?

UNIX operating system (Eunice) is a powerful multi-user, multi-task operating system that supports multiple processor architectures. According to the classification of operating systems, it is a time-sharing operating system. It was first developed by Developed by Ken Thompson, Dennis Ritchie, and Douglas McIlroy in 1969 at AT&T's Bell Laboratories. Currently, its trademark rights are owned by the International Open Standards Organization. Only UNIX systems that comply with the single UNIX specification can use the name UNIX, otherwise they can only be called UNIX-like (UNIX-like).

What is Linux?

Linux is a free-to-use and freely disseminated Unix-like operating system. It is a multi-user, multi-task, multi-thread and multi-CPU operating system based on POSIX and UNIX. It can run major UNIX software tools, applications and network protocols. It supports 32-bit and 64-bit hardware. Linux inherits the network-centric design philosophy of Unix and is a multi-user network operating system with stable performance.

The Linux operating system was born on October 5, 1991 (this is the first time the date was officially announced to the outside world). There are many different Linux 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 accustomed to using Linux to describe the entire operating system based on the Linux kernel and using various tools and databases of the GNU project.

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