ArrayExample.txt

Arrays can be quite useful, but Bash doesn't support the
full extent of Arrays as C, C#, etc do

In order to avoid unwanted confusion I will only be discussing
one-dimensional arrays, and not two-dimensional arrays, or three-dimensional arrays
Reasons are simple, bash doesn't play nice and has never been a 
language that uses the full extent of Arrays so we only on
average make one-dimensional arrays, and refer them to as
"Lists", it is possible to make a two-dimensional array in Shell-Scripting
as so many forum sites will point out but they even know 
Bash doesn't support it quite as well as it should.

Now things to cover:
	What is an Array?
	Bash uses a base index of 0.

	What is an Array?
	
	Think of an array like a shopping list
	When you write a list in general you list off one thing
	then go to the next line and write the next item right? 
	An array is no different.
	
	An array is a collection of elements, in a way instead
	of making 5 variables that contain the same type of information
	we put it in an array and then access the contents that way.
	
	You might be asking well why not just make 5 variables?
	Well good question to be honest i don't use arrays, but its covered
	in every basic programming class and is in Bash so why not?
	One reason you would create an array over making multiple variables 
	is say your script is going to gather information that is 
	going to differ each time, you can't predict how many variables you need
	so you use an array which could expand and that will cover all your bases
	
	Bash uses a base index of 0
	
	in basic terms all this means is if you want to list off the
	first element in an array you use 0, not 1, here is an example:
	I create an array called Fruit, and I set the elements:
	Pear, Apple, Orange, Blackberry, Blueberry.
	Fruit[0]= Pear
	Fruit[1]= Apple
	Fruit[2]= Orange
	Fruit[3]= Blackberry
	Fruit[4]= Blueberry

Creating an Array:
	declare -a ARRAYNAME
	ARRAYNAME=(100 75 50 25 0)
Reading Array Elements
	echo ${ARRAYNAME[*]}
	OUTPUT: 100 75 50 25 0
	
	echo ${ARRAYNAME[0]}
	OUTPUT: 100
	
	echo ${#ARRAYNAME[*]}
	OUTPUT: 5
	# - will show the amount of elements in the array	
	
	echo ${#ARRAYNAME[0]}
	OUTPUT:3
	# - will show the amount of characters of that element

Deleting Arrays
	Depending on the language in question it is a must to delete
	your Array that you no longer need, but not deleting the array in
	bash isnt the end of the world.

	unset ARRAYNAME

	unset ARRAYNAME[1]
		^ This will remove that element, not the entire array