Bash Variables - Javatpoint
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String Manipulation in Shell Scripting - GeeksforGeeks
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Unix & Linux: Argument string to integer in bash (4 Solutions!!) - YouTube
Unix & Linux: Argument string to integer in bash (4 Solutions!!) - YouTube
Bash Scripting Tutorial - Linux Tutorials - Learn Linux Configuration
How to Convert Strings into Numbers in Bash
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Using test Command in Bash Scripts
5.5. Converting an Integer to a String in Any Base — Problem Solving with Algorithms and Data Structures
Step 15: Intro to Bash Scripting. So I know I said the network traffic… | by Josh Gates | Medium
A nice way to return string values from functions in Bash | #define me human
