#!/bin/bash
my_array=( a b c )

# print index value 1
echo ${my_array[1]}

# print all items in the array
echo ${my_array[@]}
echo ${my_array[*]}

# print all index values and not their value
echo ${!my_array[@]}

# print the length of the array
echo ${#my_array[@]}

# loop over all items in the array; printing all keys as well as all values
for i in "${!my_array[@]}"
do
	echo "$i" "${my_array[$i]}"
done

# loop on just the values and not the keys
for i in "${my_array[@]}"
do
	echo "$i" 
done

# adding a value at a specific position
# using 9 to make sure it is last
my_array[9]=d
echo ${my_array[@]}
echo ${my_array[9]}

# adding items to the end of the array, using the first available index
my_array+=( e f )
for i in "${!my_array[@]}"
do
        echo "$i" "${my_array[$i]}"
done