Since I am on my backup laptop due to my primary laptop having the keyboard replaced, I wanted to make it easy to launch Unetbootin from my Spotlight as a .app. Found a nice little app in the AppStore that does just that. In this example, I will do a quick ls script.

ScriptToApp – App Maker is available in the AppStore and the cost is $2.99
I created a bash script to do a simple ls and display the results.

#!/bin/bash ls -all
You will need to make it executable

chmod +x test.sh
As you can see, prior to running the chmod command, you did not have an x in the rights section. Additionally, you can see that the test.sh file name is now red. I wrote an article on how to add color to your ls command.
Launch the ScriptToApp Application

Drag the script file from the folder

Once you drag it on the app, you should get a pop-up

Ensure all the settings are as you want including the name of the .app and click Create App

You can always launch the script through the Spotlight search bar, but this makes it cleaner. You can see the ls that ran.