How to Work with Variables in Bash
Shell Script Parameters - javatpoint
How To Pass and Parse Linux Bash Script Arguments and Parameters - GeeksforGeeks
echo command in Linux with Examples - GeeksforGeeks
Bash Function & How to Use It {Variables, Arguments, Return}
How to Pass Parameters to Shell Script Function - Fedingo
How to Read Command Line Arguments in Shell Scripts? - JournalDev
Linux Arguments - javatpoint
The Complete How To Guide of Bash Functions
Linux commands: echo
Linux echo Command Examples - JournalDev
Bash how to echo a variable
How to use Echo Command in Linux (With Examples)
Introduction to Bash Scripting: Parameter Expansions
More advanced if usage
How To Use Bash Parameter Substitution Like A Pro - nixCraft
Bash how to echo a variable
Linux echo command help and examples
5 Powerful Tips for Bash Scripting | by Mike R | Better Programming
Linux Bash Scripting Part3 - Parameters and Options - Like Geeks
