Backup Pi SD Card to Samba

backup_sd.sh

#!/bin/bash
#Usage bash <(curl -Ls https://gist.githubusercontent.com/maciekish/dc1f9372916eacf06efe10aa6e9469cd/raw)

if [ `whoami` != 'root' ]
  then
    echo "You must be root to do this."
    exit
fi

if [ -z "$1" ]
  then
    echo "Please specify block device to backup as first argument. Usually this is /dev/mmcblk0 on Raspbian."
    exit
fi

umount /mnt/backup
mkdir /mnt/backup
mount -t cifs -o user=maciekish //10.0.1.0/backup /mnt/backup
size=$(blockdev --getsize64 $1)
echo "Backing up $1 ($size bytes)"
dd bs=4M if=$1 | pv --size $size | gzip > /mnt/backup/sdcard.gz