How Shell Is Created in Unix?

How do I create a shell script?

How to write a basic shell script

1. Requirements.
2. Create the file.
3. Add the command(s) and make it executable.
4. Run the script. Add the script to your PATH.
5. Use input and variables.

How does the Unix shell work?

A Shell provides you with an interface to the Unix system. It gathers input from you and executes programs based on that input. When a program finishes executing, it displays that program’s output. Shell is an environment in which we can run our commands, programs, and shell scripts.