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Welcome in the World of Software Explore software using following menu list Software Introduction Define Software Software Examples Programming languages used for creating softwares What is Software ? Awesome ! You have amazing question " What is the software ? ". Many of you think that it's a simple term , But it's not a term but it's a big industry. Billions of dollars market . In this covid19 pandemic software industry helped us to connect each other through video, audio calls. Social media channels given us opportunity to share our thoughts easily with wider audience. There are so Many applications of softwares. Software help us in each every field. Software makes our work easy. Software help us to share messages, write notes etc. Many of you asked your teachers about softwares. Maybe ! They gave you the answer to this Question. But that was not sufficient for you to understand software. Do you know why ? Because many teachers just ...

Security refers to providing a protection to computer system. Computer system must be protected against unauthorized access, malicious access to system memory, viruses, worms etc. A security goals defines the operations that can be executed by a system while still preventing unauthorized access. Security Requirements The main security requirements are Authorization : It allows to access for those users, which are related to the system. Authentication : It refers to verifying each user of the system. OS generally authenticate users using username/password, user card, finger print, eye retina etc. Privacy/Confidentiality Ensure that personal information is not being accessed by unauthorized parties. Integrity Ensuring that the data has not been tampered with. Unix system provides a special login name for the exclusive use of the administrator called as root. Its password is generally set at the time of installation of the system and ha...

What is Operating System   The Operating System is a program with the following features  An operating system is a system software that acts as an interface between the user and the computer hardware. It is an integrated set of specialized programs used to manage overall resources and operations of the computer.  It is a specialized software that controls and monitors the execution ofall other programs that reside in the computer, including application Unit    Intorduction to Opeating System all other programs that reside in the computer, including applicationprograms and other system software.  Objectives of Operating System To make the computer system convenient to use in an efficientmanner. To hide the details of the hardware resources from the users.To provide users a convenient interface to use the computer system. To act as an intermediary between the hardware and its users, makingit easier for the users to access and use other resources.  To man...

A shell is a program that interprets commands and acts as an interface between application layer and kernel of OS A Linux shell is command interpreter that interprets a user command which are directly entered by user or which can be read from a file called as shell programming or shell. You can get the name of your shell prompt, with following command : Shell Scripts Syntax: #echo $SHELL Output: /bin/bash  When a group of commands has to execute regularly, it isbetter to store in a file. All such files are called shell scripts, shell program, or shell The extension is .sh is used for shell program scripting. You can get the name of your shell prompt, with followingprocedures. Steps to create shell scripts 1. Open the terminal. Go to the directory where you want tocreate your script. 2. Create a file using vi editor(or any other editor). Name thescript file with extension .sh 3. To run your script in a certain shell, start your script with #!followed by the shell name. T...