What Is a File Extension?

Posted by admin at September 9, 2021

A file extension, sometimes called a file suffix or a filename extension, is the character or group of characters after the period that makes up an entire file name. A filename extension, file extension or file type is an identifier specified as a suffix to the name of a computer file. The extension indicates a characteristic of the file […]

Continue

Communication in UNIX

Posted by Amrita Gautam at July 18, 2021

INTRODUCTION The strongest feature of UNIX is self-networking or communication. Today most of the companies still prefer UNIX because of this feature. Communication is a facility through which user can send and receive messages and data from one user to another. There are two type of communication is possible in UNIX:  Remote communication as well […]

Continue

UNIX Administration

Posted by Amrita Gautam at July 3, 2021

INTRODUCTION When we work with any kind of system, whether a single-user or multi-user, it needs a kind of management to control its resources, work on them and perform many other tasks related with the environment of thesystem. In single-user system the user is the in-charge of the system tomanage all activities of the system […]

Continue

FEATURES OF UNIX

Posted by Amrita Gautam at May 15, 2021

There are several features of UNIX that have made it very popular. The main features of UNIX are as fellows: Multi-User UNIX is a Multi-user operating system which allows concurrent access to Host machine by multiple users working different terminals. In UNIX operating system, UNIX server allows multiple users to have access to the UNIX […]

Continue

ARCHITECTURE OF UNIX

Posted by Amrita Gautam at

UNIX follows Layered architecture as shown in figure below. It consists of four main layers called: Hardware, shall and Utilities. HARDWARE  It Consist with all physical components of computer system and hardware modules of the system visible with naked eyes such as:monitor, CPU, RAM etc. KERNEL  The kernel of UNIX is the hub of the […]

Continue

HISTORY OF UNIX

Posted by Amrita Gautam at

The origin of UNIX dates back to 1965, when a joint venture was signed by bell laboratories, General Electric company and MIT (Massachusetts Institute of Technology). The aim of this joint venture was to develop an operating system which had  Capability to serve large community  Capability to provide sharing of data among users working on […]

Continue

Threads

Posted by Anisha Jaiswar at May 14, 2021

Multithreading Model There are two types of threads 1.User threads      2. Kernel threads  Kernel threads are supported and managed directly by the operating system. User threads are above the kernel and the managed without kernel support. There are three common ways of establishing relationship between user threads and kernel threads. Many-to-one model One-to-one model Many-to-many […]

Continue

Overview of UNIX

Posted by Amrita Gautam at May 2, 2021

INTRODUCTION An operating system is the software that manages all the resources of computer and provides a convenient and safe environment for running programs . Though , there are various operating systems available in the market today like DOS , Windows , UNIX , Linux etc.Amongst these UNIX operating system had arrived in the computer […]

Continue

Functions of operating system

Posted by Anisha Jaiswar at May 1, 2021

The operating system controls and coordinates the use of hardware among various application programs for various users . Various functions of operating system are Resource utilization Resource allocation Process control and management File management Communication Information maintenance Device management Basic Terms Associated With Operating System Kernel Kernel is defined as a program running at all […]

Continue