We cannot imagine a programming language without the concept of arrays. It doesn’t matter how they are implemented among various languages. Instead arrays help us in consolidating data, similar or different, under one symbolic name.
Here as we are concerned about shell scripting, this article will help you in playing around with some shell scripts which make use of this concept of arrays.
Full article here:
Working with Arrays in Linux Shell Scripting – Part 8 (Tecmint)