Unix And Unix Operating System

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6.4 C-DOT DSS MAX is administrated by UNIX operating system BSNL C-DOT DSS MAX uses UNIX operating system to operate the exchange. The UNIX operating system is a set of programs that act as a link between the computer and the user. The computer programs that allocate the system resources and coordinate all the details of the computer 's internals is called the operating system or kernel. Users communicate with the kernel through a program known as the shell. The shell is a command line interpreter it translates commands entered by the user and converts them into a language that is understood by the kernel. UNIX was originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Douglas McIlroy, and Joe Ossanna. There are various UNIX variants available in the market. Solaris UNIX, AIX, HP UNIX and BSD are few examples. Several people can use a UNIX computer at the same time; hence UNIX is called a multiuser system. A user can also run multiple programs at the same time; hence UNIX is called multitasking. This is why BSNL uses UNIX operating system as the exchanges can be operated through a remote area. UNIX operating system provides various commands to operate embedded systems in C-DOT DSS MAX. The commands used in C-DOT DSS MAX UNIX operating system are broadly divided into two categories- 1. Administration command classes 2. Maintenance command classes In Administration command classes, there
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