The first line of a script is the “ShBang” or Shabang. It is a “Sh” #, followed by a “Bang” !, then an <Interpreter> and [Arguments]

EXP: #!<interperter> [arguments]

Sources Provided by the community:
https://linuxhandbook.com/shebang/
https://linuxhint.com/shebang-bash-explained-in-examp
https://linuxize.com/post/bash-shebang/

https://www.howtogeek.com/442332/how-to-work-with-variables-in-bash/

https://www.geeksforgeeks.org/bash-scripting-if-statement/

https://www.geeksforgeeks.org/bash-scripting-for-loop/

https://www.geeksforgeeks.org/bash-scripting-while-loop/