A computer system comprises hardware and software components, aiming to offer a powerful computational tool. These systems play a crucial role across diverse domains, aiding us in numerous tasks. The prevalence of the internet has significantly bolstered the utilization of computers for information sharing and communication. Computer systems empower us to store, process, display, and transmit information. Even in a basic modern computer system, multiple programs are typically required to carry out various functions effectively.

Wednesday, April 12, 2023

UNIX operating system

The UNIX operating system is a set of programs that act as a link between the computer and the user. The origin of UNIX can be traced back to 1965, when a joint venture was under-taken by Bell Telephone Laboratories, the General Electric Company and Massachusetts Institute of Technology. The first Unix OS was developed by Ken Thompson and Dennis Ritchie at Bell Laboratories in 1969.

UNIX is written in high-level language. About 95% of the OS is written in C programming language. 'C' making it easy to port to different configurations. The ability to transport the UNIX system from one brand of computer to another has been the major reason for the acceptance of this system.

It uses a hierarchical file system that allows easy maintenance and efficient implementation. UNIX uses a consistent format for files, the byte stream, making application programs easier to write.

The main features of UNIX include multiuser, multitasking and portability capabilities. Multiple users access the system byconnecting to points known as terminals. Several users can run multiple programs or processes simultaneously on one system.

UNIX is now a family of operating systems:
– AIXfrom IBM
– HP-UXfrom Hewlett-Packard
– GNULinux from Free Software Foundation
– Solaris, SunOSfrom Sun Microsystems
UNIX operating system

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