Amazon AWS Cloudwatch report memory metric bash script

awscloudwatch_reportmemory.sh

#!/bin/bash 
memory=$(cat  /proc/meminfo | grep MemFree: | awk '{print $2}')
memory=$(echo $memory/1000 | bc)
echo memory is: $memory
aws cloudwatch put-metric-data --metric-name Memory\ 
                               --namespace WebServer\ 
                               --unit Bytes \
                               --value $memory\ 
                               --dimensions InstanceID=i-093beb71f2d7647ce,InstanceType=m1.small\ 
                               --region eu-west-1