Unix - WikipediaIt began as a one-man project under the leadership of Ken Thompson of Bell Labs. It went on to become most widely used operating systems. Unix is a proprietary operating system. Unix is an OS which is popular in companies, universities big enterprises, etc. Linux is an operating system built by Linus Torvalds at the University of Helsinki in The name "Linux" comes from the Linux kernel. It is the software on a computer which enables applications and the users to access the devices on the computer to perform some specific function.
Introduction to UNIX / Linux
Torvalds built Linux as a free and open source alternative to Minix, another Unix clone that was predominantly used in academic settings. Linux is a Unix-like, open source and community-developed operating system for computers, servers, mainframes, mobile devices and embedded devices. The code used to create Linux is free and available to the public to view, edit, and—for users with the appropriate skills—to contribute to. Learning Linux is like riding a bike, you can only become proficient by actually doing. So before getting started, make sure you have access to a terminal.
IMPORTANT NOTE FOR FINANCIAL AID RECIPIENTS:
As of , the Unix version with the largest installed base is Apple 's macOS. Unix systems are characterized by a modular design that is sometimes called the " Unix philosophy ". This concept entails that the operating system provides a set of simple tools that each performs a limited, well-defined function,  with a unified filesystem the Unix filesystem as the main means of communication,  and a shell scripting and command language the Unix shell to combine the tools to perform complex workflows. Unix distinguishes itself from its predecessors as the first portable operating system: almost the entire operating system is written in the C programming language , thus allowing Unix to reach numerous platforms. Unix was originally meant to be a convenient platform for programmers developing software to be run on it and on other systems, rather than for non-programmers. At first, Unix was not designed to be portable  or multi-tasking. Unix systems are characterized by various concepts: the use of plain text for storing data; a hierarchical file system ; treating devices and certain types of inter-process communication IPC as files; and the use of a large number of software tools , small programs that can be strung together through a command-line interpreter using pipes , as opposed to using a single monolithic program that includes all of the same functionality.