Unix shells

A shell is a command interpreter that provides users with a text-based interface to interact with the operating system. It allows you to execute operations using commands, provides advanced features like scripting, and offers optimized ways to perform tasks compared to a Graphical User Interface (GUI). Unix shells, commonly found on Linux and macOS computers, come in different variations. The most prevalent ones include Bash, Csh, Zsh, and Fish. These shells have evolved from the original Bourne Shell, commonly known as sh, developed by Steve Bourne....