CLI | Checking if the var exists

In this video, we will be checking if the var exists. Checking for a variable it is important for our CLI, because it will be used for the CLI functionality.

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============TABLE OF CONTENTS===========
- 0:00 Introduction
- 2:07 Why we need to know if the variable exists
- 2:49 Creating a function to know if the variable exists
- 4:07 Using logs in the debug mode
- 5:06 How to interpret a string as a variable
- 6:03 Creating a condicional to check if the variable has a value
- 9:31 Modifying the CLI framework for each message to have a break line

============DOCUMENTATION===========
- docs: http://videos.qa-ops.com/docs

============GITHUB===========
- Github: https://repos.qa-ops.com/github
- Repository: https://github.com/qa-ops/bb8cli
- Branch: 07-check-var-exists

============MENTIONED VIDEOS===========
- CLI | Creating from scratch: https://youtu.be/831OQd6qr9s
- CLI | The First Command: https://youtu.be/TxpZ1GBhmaY
- CLI | Explaining the Framework: https://youtu.be/9201NTunsnA
- CLI | Automatic Setup Check: https://youtu.be/jtBvcOmI2gg
- CLI | Creating config file: https://youtu.be/eWo-mcaPoM4
- CLI | Checking user config: https://youtu.be/IgH0nKcmvB8

============PLAYLISTS===========
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- Java RestAssured API: https://videos.qa-ops.com/java-restassured-automation
- Unix Command Line: https://videos.qa-ops.com/unix-command-line
- Bash Script: https://videos.qa-ops.com/bash-script-en

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====OPENING IMAGE====
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====MUSIC BY====
- Author: Simone Geravini
- Licensed by: Zimo Music
- https://www.youtube.com/channel/UCu9V0aROh3RABqHdXLan5GA