When this time is expired, it passes control to the following user on the system. Time-sharing is done by a scheduler that divides the CPU time into several segments also called a time slice, and each segment is assigned to each user on a scheduled basis. It deals with the principle of time-sharing. Multiple users can log on to the system from different terminals and run different jobs that share the resources of a command terminal. Multi-user: UNIX operating system supports more than one user to access computer resources like main memory, hard disk, tape drives, etc. Multitasking: A UNIX operating system is a multitasking operating system that allows you to initiate more than one task from the same terminal so that one task is performed as a foreground and the other task as a background process. Let's discuss the features of UNIX OS one by one in detail. In UNIX, the file system is a hierarchical structure of files and directories where users can store and retrieve information using the files. It is prevalent among scientific, engineering, and academic institutions due to its most appreciative features like multitasking, flexibility, and many more. UNIX is a powerful Operating System initially developed by Ken Thompson, Dennis Ritchie at AT&T Bell laboratories in 1970.
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