How to get Autoscaling group Instances IP adresses

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I have written a small script like below to get the IP list:

#!/bin/bash
for i in `aws autoscaling describe-auto-scaling-groups --auto-scaling-group-name ASGName | grep -i instanceid  | awk '{ print $2}' | cut -d',' -f1| sed -e 's/"//g'`
do
aws ec2 describe-instances --instance-ids $i | grep -i PrivateIpAddress | awk '{ print $2 }' | head -1 | cut -d"," -f1
done;

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