Bash conceptual questions
I am new to linux & bash, and I am working on some different scripts, but I have a few conceptual questions I need answered to help me find the best approach to what I want to do.

1. What is the most efficient way to store data in a bash script, and save it as a file, that another script can speedily parse?

2. What are some good examples of colorful bash menu's? How can I have a multi-column menu's in bash?

3. Can I display images in bash or would it be better to send the image info to, let's say a notify-send, and have it to display any images?

Thank you.
Bash conceptual questions
===

I am new to linux & bash, and I am working on some different scripts, but I have a few conceptual questions I need answered to help me find the best approach to what I want to do.

1. What is the most efficient way to store data in a bash script, and save it as a file, that another script can speedily parse?

2. What are some good examples of colorful bash menu's? How can I have a multi-column menu's in bash?

3. Can I display images in bash or would it be better to send the image info to, let's say a notify-send, and have it to display any images?

Thank you.