Bash - Arrays - Add Elements

bash-array-add-items.sh

#!/usr/bin/env bash

array=(pluto pippo bob)
echo "array: ${array[*]}"

echo
addlist=(mike john)
echo "add list: ${addlist[*]}"
array+=(${addlist[*]})
echo "${array[@]}"

echo
addsingle=peter
echo "add single INcorrectly: $addsingle"
array+="${addsingle}"
echo "${array[@]}"
echo
echo "add single correctly: $addsingle"
array+=(${addsingle})
echo "${array[@]}"