Script para listar instâncias AWS EC2

#!/bin/bash

tmpFile
="/tmp/ec2.info"
ec2Info
=`ec2-describe-instances > $tmpFile`
instances
=`cat $tmpFile | grep TAG | awk {'print $3'}`
numOfInstances
=`cat $tmpFile | grep INSTANCE | wc -l`
you
=`whoami`


echo
"Dear $you, I wanted to describe for you the current number of instances you have: $numOfInstances"
echo
"The instances you have, by hostname, are as follows ..."
for instance in $instances
do
hostname
=`cat $tmpFile | grep INSTANCE | grep $instance | awk {' print $4 '}`
echo
"$hostname"
done