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BASH Fallback to Default Variables Linux Shell Tutorial
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Bash Scripting - Variables, Arrays, If-Then-Else
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Export Variables - Why you need to Export BASH Variables
Shell Basics - More If Then Else with Integers - Linux - BASH
Using Variables in Shell Scripts!: Linux Terminal 201 - HakTip 178
Shell Scripting - If & If/else
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Intermediate Bash: Common Patterns We Will Use When Making Tools
Shell Basics - If Then Else with Integers - Linux - BASH
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Bash Scripting for Beginners: Complete Guide to Getting Started - Variables (Part 3)