Skip to main content

What is Linux.(लिनक्स क्या है ?)


What Is Linux( लिनक्स क्या है ?)

In the simple language Linux(लिनक्स ) is an operating system (OS). 

लिनक्स एक बेसिक ऑपरेटिंग सिस्टम है ये बिलकुल विंडोज ,एप्पल , मैक  की तरह ही होता है | 


We all are familiar with other operating systems like Microsoft windows, Apple Mac OS, iOS, Google android, etc, just like them linux is also an operating system.

An operating system is a software that enables communication between computer hardware and software.

 It conveys input to get processed by the processor and brings output to the hardware to display it.

 This is the basic function of an operating system. Although, it performs many other important tasks, let's not talk about that.

Linux is around us since mid 90s. It can be used from wristwatches to supercomputers. 

It is everywhere in our phones, laptops, PCs, cars and even in refrigerators.

It is very much famous among the developers and normal computer users.






figure :1











Linux operating system
Figure : 2






Structure Of Linux Operating System


An operating system is a collection of software, each designed for a specific function.


Linux OS has following components:


1) Kernel

kernel is the core of the operating system. It establishes communication between devices and software. Moreover, it manages the system resources. Basically it has four responsibilities:




Figure :3 
  • device management: (डिवाइस मैनेजमेंट )A system has many devices connected to it like CPU, memory device, sound cards, graphic cards, etc. 


  •  A kernel stores all the data related to all the devices in device driver (without this kernel won't be able to control the devices). Thus kernel knows what a device can do and how to manipulate it to bring out the best performance. It also manages communication between all the devices. Kernel has certain rules that has to be followed by all the devices.

  • Memory management: ( मेमोरी मैनेजमेंट )Another function that kernel has to manage is the memory management.
  •  Kernel keeps a track of used and unused memory and make sure that processes shouldn't manipulate data of each other using virtual memory address.

  • Process management: (प्रोसेस मैनेजमेंट )In process management kernel assign enough time and gives priorities to processes before handling CPU to other process. It also deals with security and ownership information.

  • Handling system calls:(हैंडलिंग सिस्टम कॉल्स ) Handling system calls means a programmer can write a query or ask the kernel to perform a task.

Comments

  1. Ankita SharmaFebruary 21, 2020 at 5:18 PM

    Thanks for sharing such a fabulous information. Here is a blog on Best C++ Course for you all to learn more.

    ReplyDelete

Post a Comment

Popular posts from this blog

Memory Hierarchy

Memory Hierarchy A memory unit is an essential component in any digital computer since it is needed for storing programs and data. Typically, a memory unit can be classified into two categories: The memory unit that establishes direct communication with the CPU is called  Main Memory . The main memory is often referred to as RAM (Random Access Memory). The memory units that provide backup storage are called  Auxiliary Memory . For instance, magnetic disks and magnetic tapes are the most commonly used auxiliary memories. Apart from the basic classifications of a memory unit, the memory hierarchy consists all of the storage devices available in a computer system ranging from the slow but high-capacity auxiliary memory to relatively faster main memory. The following image illustrates the components in a typical memory hierarchy. Auxiliary Memory Auxiliary memory is known as the lowest-cost, highest-capacity and slowest-access storage in a computer system....
1 comment
Read more

Input Devices

Input Devices(इनपुट डिवाइस ) Input device enables the user to send data, information or control signals to computer. Central processing unit of computer receives the input and processes it to produce output. Some of the popular input devices are: Keyboard Mouse Scanner Joystick Light Pen Track ball Digitizer Microphone Magnetic Ink Character Recognition (MICR) Optical Character Reader (OCR) Keyboard (कीबोर्ड ) It is a basic input device that is used to enter data by pressing keys. It has different sets of keys for letters, numbers, characters and functions. QWERTY keyboard is the commonly used keyboard to enter data. Mouse (माउस) It is a hand held input device. It is used to move cursor or pointer across the screen. It generally has left and right button and a scroll wheel between them. Laptop computers come with a touch pad that works as a mouse. It lets you control the movement of cursor or pointer by moving your finger over the touchpad. Scanner (...
2 comments
Read more

Python For Loop ( Class 11)

  Note:- Read it Carefully: Python Loops The flow of the programs written in any programming language is sequential by default. Sometimes we may need to alter the flow of the program.  The execution of a specific code may need to be repeated several numbers of times. For this purpose, The programming languages provide various types of loops which are capable of repeating some specific code several numbers of times.  Consider the following diagram to understand the working of a loop statement. Why we use loops in python? The looping simplifies the complex problems into the easy ones.  It enables us to alter the flow of the program so that instead of writing the same code again and again, we can repeat the same code for a finite number of times.  For example, if we need to print the first 10 natural numbers then, instead of using the print statement 10 times, we can print inside a loop which runs up to 10 iterations . Advantages of loops There are the following ad...
3 comments
Read more