What is Linux shell Linux for Beginners 2021

what is linux shell | Linux for Beginners 2021

A Shell is a user interface to access the operating system services. It is a command language interpreter and execute commands when from input devices such as keyboard or even from file. In the term of operating system the shell can either use GUI (Graphical User Interface ) or CLI (Command Line Interface).

 Command Line Shell is called Terminal in Linux and MacOS and Command Prompt in Windows

Graphical Shell means for manipulate programs based on Graphical User Interface (GUI) by allowing for operations such as Opening , Closing, Moving , Resizing widows as well as switching focus between windows.

As name is shows it is the outer most layer around the Operating system Kernel.

Kernel is the computer program that is the core of the computer operating system. The complete control over the everything in system.

 

Kernel manages the following resources of the Linux system i.e.

File Management, process Management, I/O Management, Memory Management,Device Management & etc.

There is a several shells for Linux such as TCSH, KSH, GSH, ZSH and one of the more comman one is BASH ( Bourne Again Shell)

So each Shell dows a same job where it understand different commands and provide different build-in functions.

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