Differences between Linux and Unix

In the computer age, a considerable number of people mistakenly believe that Unix and Linux operating systems are the same. However, the opposite is true. Let's take a closer look.

什么是 Unix？

Unix, known as the operating system in the IT space, was developed by AT & T in New Jersey, USA, in 1969 (currently its trademark is owned by the International Organization of Standards and Standards Organization). Most operating systems are inspired by Unix, and Unix is also inspired by the unfinished Multics system. Another version of Unix is Play 9 from Bell Labs.

Where is Unix used?
As an operating system, Unix is mostly used in servers, workstations, and now also useful on personal computers. It plays a very important role in creating an internet, computer network, or client / server model.

Unix system features
Support multitasking
Compared to Multics operation easier
All data is stored in plain text
Tree storage with a single root file
Ability to access multi-user accounts simultaneously
The composition of the Unix operating system
a) Single-core operating system, responsible for low-level operations and user-initiated operations, communication between the kernel through the system call. b) System Tools c) Other Applications

What is Linux?

This is an open source operating system based on the principles of the Unix operating system. Just as open source means, it's a freely downloadable system. It can also be customized by editing, adding and expanding its source code. This is one of its biggest benefits, unlike the rest of today's operating systems (Windows, Mac OS X, etc.) that have to pay. Unix systems are not the only templates for creating new systems. Another important factor is the MINIX system, unlike Linus, which was used by commercial software developers Andrew Tanenbaum.

Linux was developed by Linus Torvalds in 1991 as an operating system of its own personal interest. One of the main reasons why Linux borrows from Unix is ​​because of its simplicity. The first official Linux distribution (0.01) was released on September 17, 1991. Although this system is not perfect and perfect, Linus is very much interested in it and within a few days, Linus has emailed a few e-mails about Linux source extensions and other ideas.

Linux features
The cornerstone of Linux is the Unix kernel, which is based on the basic features of Unix and the POSIX and standalone UNIX specifications. It appears that the operating system's official name is taken from Linus, with the "x" at the end of its operating system name associated with the Unix system.

The main function
Simultaneous operation of multitasking (multitasking)
A program can contain one or more processes (multipurpose systems), and each process can have one or more threads.
Multi-user, so it can run multiple user programs.
Personal accounts are properly authorized to protect.
Therefore, the account accurately defines the system control.
Penguin Tux Logo Author Larry Ewing, who chose the penguin as his mascot for the open source Linux operating system. Linux Torvalds originally proposed the name of the new operating system as "Freax," a combination of "free" + "freak" + x (UNIX systems) rather than the first version FTP server from the name (Linux).