Linux shell helps us to interact with Linux machine, it's much powerful than GUI (Graphical User Interface), Linux comes with bash shell(default shell). A shell is a command-line interface (CLI) that allows users to interact with an operating system and execute commands. In the context of Linux and Unix systems, a shell is a program that provides a command-line interface to the operating system and its services. The shell is a powerful and flexible tool that allows users to execute commands and scripts, control the operation of the system, and access and manipulate data and resources. The shell provides a wide range of built-in commands and utilities that can be used to perform a variety of tasks, such as navigating the file system, managing processes and files, and configuring the system. The shell also supports user-defined commands and scripts, which can be used to automate and customize the operation of the system. The shell is usually accessed through a terminal emulator, which is a program that simulates a terminal or console and allows users to enter commands and view the output. The terminal emulator provides a command-line interface to the shell, and it can be used to connect to the system remotely or locally. There are several different shells available for Linux and Unix systems, each with its own set of features and capabilities. Some of the most popular shells for Linux and Unix systems include the Bourne shell (sh), the C shell (csh), the Korn shell (ksh), and the Bourne-Again shell (bash). The shell is an essential tool for users and administrators of Linux and Unix systems, and it is a powerful and flexible platform for automating and customizing the operation of the system. commands functionality can be modified with options. #linux #shell #ubuntu #centos8 #aws,cidr block,aws cidr range,classless interdomain routing,cidr protocol,cidr id kya hai,aws,aws devops,aws tutorial,aws cloud,aws vpc,aws virtual private cloud,aws vpc interview question and answers,aws cidr block,how to calculate cidr range,cidr in aws,vpc ip address,vpc subnet,vpc subnetting,cidr,cidr notation,vpc cidr,subnet sizing,aws vpc sizing,cidr subnetting,calculate cidr,aws vpc tutorial for beginners,aws vpc course,custom vpc,aws cidr,cidr block,aws cidr range,classless interdomain routing,cidr protocol,cidr id kya hai,aws,aws devops,aws tutorial,aws cloud,aws vpc,aws virtual private cloud,aws vpc interview question and answers,aws cidr block,how to calculate cidr range,cidr in aws,vpc ip address,vpc subnet,vpc subnetting,cidr,cidr notation,vpc cidr,subnet sizing,aws vpc sizing,cidr subnetting,calculate cidr,aws vpc tutorial for beginners,aws vpc course,custom vpc,aws cidr,cidr block,aws cidr range,classless interdomain routing,cidr protocol,cidr id kya hai,aws,aws devops,aws tutorial,aws cloud,aws vpc,aws virtual private cloud,aws vpc interview question and answers,aws cidr block,how to calculate cidr range,cidr in aws,vpc ip address,vpc subnet,vpc subnetting,cidr,cidr notation,vpc cidr,subnet sizing,aws vpc sizing,cidr subnetting,calculate cidr,aws vpc tutorial for beginners,aws vpc course,custom vpc,aws cidr,cidr block,aws cidr range,classless interdomain routing,cidr protocol,cidr id kya hai,aws,aws devops,aws tutorial,aws cloud,aws vpc,aws virtual private cloud,aws vpc interview question and answers,aws cidr block,how to calculate cidr range,cidr in aws,vpc ip address,vpc subnet,vpc subnetting,cidr,cidr notation,vpc cidr,subnet sizing,aws vpc sizing,cidr subnetting,calculate cidr,aws vpc tutorial for beginners,aws vpc course,custom vpc,aws cidr,cidr block,aws cidr range,classless interdomain routing,cidr protocol,cidr id kya hai,aws,aws devops,aws tutorial,aws cloud,aws vpc,aws virtual private cloud,aws vpc interview question and answers,aws cidr block,how to calculate cidr range,cidr in aws,vpc ip address,vpc subnet,vpc subnetting,cidr