#!/bin/bash

clear

part=$(mount |grep '^/dev.* / ' |awk '{print $1}')

if [ -z "$part" ];then

    echo "Error detecting rootfs"

    exit -1

fi

dev=$(echo $part|sed 's/[0-9]*$//g')

devlen=${#dev}

num=${part:$devlen}

if [[ "$dev" =~ ^/dev/mmcblk[0-9]*p$ ]];then

    dev=${dev:0:-1}

fi

if [ ! -x /usr/bin/growpart ];then

    echo "Please install cloud-utils-growpart (sudo yum install cloud-utils-growpart)"

    exit -2

fi

if [ ! -x /usr/sbin/resize2fs ];then

    echo "Please install e2fsprogs (sudo yum install e2fsprogs)"

    exit -3

fi

echo $part $dev $num

echo "Extending partition $num to max size ...."

growpart $dev $num

echo "Resizing ext4 filesystem ..."

resize2fs $part

echo "Done."

df -h |grep $part