Bash Arrays - Delete Elements

bash-array-delete-items.sh

#!/usr/bin/env bash
# see: https://stackoverflow.com/questions/16860877/remove-an-element-from-a-bash-array

array=(pluto pippo bob john 1 56)
echo "array: ${array[*]}"
echo
delete=(pippo 56)
echo "delete: ${delete[*]}"
for target in "${delete[@]}"; do
  for i in "${!array[@]}"; do
    if [[ ${array[i]} = $target ]]; then
      unset 'array[i]'
    fi
  done
done
echo "array: ${array[*]}"
echo
echo "This creates gaps:"
declare -p array
# declare -a array=([0]="pluto" [2]="bob")

echo
echo "Rebuild the array:"
array=("${array[@]}")
declare -p array
# declare -a array='([0]="pluto" [1]="bob")'