Strictly speaking, no, but it would be extremely hard to interact with the system without one.
There is no the system file. There are many files necessary to create a working Unix system.
A Unix console is a CLI interface through which to control or monitor a Unix computer.
Unix work is performed by users of the unix system, for application and system programs, or anything that requires a Unix system.
UUCP is the abbriviation of Unix to Unix copy. It is worldwide email system called UUCP or Unix to Unix copy.This email system was developed for the operating system called Unix.
Unix came first; Linux is a clone of the Unix Operating System.
The current terminal or console.
Yes. UNIX is a computer operating system.
Linux is an open system, Unix is not.
Yes, Unix is system software. It is a kind of operating system.
Yes, you can.
The operation and maintenance of a Unix system.
In 1984, another factor brought added attention to UNIX system