Exemplo de shell script em FOR com indice e valor

shell-script-example-for.sh

#!/bin/sh

declare -A DATA_BASES
DATA_BASES+=(  
[table]="this table"
)

for TABLE in "${!DATA_BASES[@]}"; do
  :
  # table
  echo "${TABLE}"
  
  # this table
  echo "${DATA_BASES[$TABLE]}"
done