The shell is a program within a Linux or Unix operating system which allows you to enter commands for execution by the system. When a terminal window is opened on a linux computer, it starts the shell program which presents an interface to enter commands. This interface is known as the command line interface. When a command is entered, it is executed by the shell and the output is displayed on the screen. In addition to being able to accept and execute commands interactively, the shell can also execute commands stored in a file. This mode of execution is known…
Read the full article: What Is Shell Scripting and Why You Should Use It
