An interactive shell script to display a menu and perform file Operations

In this video we will be learning
how to use switch case to create an interactive display menu and perform file operations
Some shortcuts and keys used
Ctrl+Alt+T --- To open Terminal Window
i --- To Switch to Insert mode in Vi editor.
Esc ---Switch to Command mode.
:w -- Save and continue editing.
:wq or ZZ -- Save and quit/exit vi editor.
`: Single quote is below esc key
Make sure to leave proper space for a expression