Accessing array index variable from bash shell script loop?

Question

I want to access the array index variable while looping thru an array in my bash shell script.

myscript.sh

#!/bin/bash
A=('foo' 'bar' 'baz' 'bat')
for i in ${A[*]}; do
  echo $i
done

Actual result

foo
bar
baz
bat

Desired result

How do I alter my script to achieve this?

Let Me Tink About It · Accepted Answer · 2019-08-18 19:38:43Z

3

You can loop over index using indirect reference syntax (since Bash 3) :

#!/bin/bash

A=('foo' 'bar' 'baz' 'bat')
for i in ${!A[*]}; do # replace ${A[*]} with ${!A[*]}
  echo $i
done

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answered Apr 23, 2016 at 2:30

SLePort

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