I need some help with a linux script.

Write a shell script that displays the following menu items. Make sure users can continue running the script until they want to exit.

1. Display a list of files and directories in their current directory

2. Display a long list of files and directories in their current directory

3. Display the last 10 lines of the log file messages (/var/log/messages)

4. Display the contents of this script

5. Display the contents of this script in reverse order

6. Exit the program