#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
indirarray()
{
   local intermediary
   local sub

   intermediary="${1}[@]"
   local -a leftValue=("${!intermediary}")

   local -a leftSub
   eval leftSub=(\"\${!${1}[@]}\")

   echo "$1" Value = ${leftValue[@]}
   echo "$1" Sub = ${leftSub[@]}
}

a=(1 2 3 4 5)
b=(a b c d e)

c=([0]=10 [2]=20 [4]=40 [8]=80)

indirarray a
indirarray b
indirarray c

ref=a
tmp="$ref[@]"
printf "<%s> " "${!tmp}"; echo    # Iterate whole array.

ref=c
tmp="$ref[@]"
printf "<%s> " "${!tmp}"; echo    # Iterate whole array.