setup_raspbian_linux.sh

#!/bin/bash          
echo "Set up raspbian image on sd card:"
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"

#use df -h to discover all partitions of the sd card
#umount all partitions first before keep going

df -h
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
echo "unmount all partitions of the sd card first"
read -p "partitions: " partitions
umount $partitions

#setup raspbian image
echo "download latest raspbian image and decompresse it"
wget -S https://downloads.raspberrypi.org/raspbian_latest && unzip raspbian_latest -d .
raspbian_img=$(ls -t -U *-raspbian-jessie.img)

echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
echo "copying the image to the sd card"
read -p "dd destination:" destination
dd bs=4M if=$raspbian_img of=$destination

echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
echo "checking the image copy progress"
dd bs=4M if=$destination of=from-sd-card.img
truncate --reference $raspbian_img from-sd-card.img
diff -s from-sd-card.img $raspbian_img

sync
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
echo "Write cache is flushed, it is safe to unmount sd card now!"
echo "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"

#remove image after setup
rm -f raspbian_latest && echo "rm raspbian_latest"
rm -f $raspbian_img && echo "rm raspbian_img"