Shell: What It Is & Types of Shells Explained

A shell is a program that provides an interface for users to interact with the operating system. It's a command-line interface (CLI) that allows users to enter commands and receive output from the system. The shell interprets the commands entered by the user and executes them, providing a way for users to interact with the system without needing a graphical user interface. There are many different types of shells available, including the Bash shell, the Zsh shell, and the Fish shell.