How to get value from variable in bash

Question

I have bash script in which I am passing number of arguments and want to get argument at index specified

#! /bin/bash

index=$1
echo "argument at index $1 is" $[$index]

./temp.sh 3 1 2 5 6
argument at index 3 is 3

but I want output like
argument at index 3 is 2

anubhava · Accepted Answer · 2014-02-10 06:37:20Z

2

You can use indirect variable referencing:

#! /bin/bash

index="$1"
echo "argument at index: $index is ${!index}"

OUTPUT: (with your command line)

argument at index: 3 is 2

answered Feb 10, 2014 at 6:37

anubhava

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