blueberry.sh

#!/bin/bash

runDiskFree() {
  echo "Running df -h"
  echo
  df -h
  echo
}

getDeviceName() {
  echo "Enter the device name (eg. disk1s1)" && read DEVICE_NAME

  read -r -p "Is ${DEVICE_NAME} correct? [y/N] " response
  if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]
  then

    echo "Unmounting..."
    sudo diskutil unmount /dev/${DEVICE_NAME}

    getDownload

  else
    echo "ERROR: Wrong device name entered"
    exit
  fi
}

getDownload() {
  echo "Enter the full path to the download (eg. /Users/rey/Downloads/2016-05-27-raspbian-jessie-lite.img)" && read DOWNLOAD_PATH

  read -r -p "Is ${DOWNLOAD_PATH} correct? [y/N] " response
  if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]
  then

    writeImage

  else
    echo "ERROR: Wrong download path entered"
    exit
  fi
}

writeImage() {

  echo ${DEVICE_NAME} > /tmp/RAW_DEVICE_NAME
  sed -i -e 's/disk/rdisk/' /tmp/RAW_DEVICE_NAME
  sed -i -e 's/..$//' /tmp/RAW_DEVICE_NAME
  RAW_DEVICE_NAME=`cat /tmp/RAW_DEVICE_NAME`



  read -r -p "About to run
  dd bs=1m if=${DOWNLOAD_PATH} of=/dev/${RAW_DEVICE_NAME}
  [y/N] " response
  if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]
  then

    sudo dd bs=1m if=${DOWNLOAD_PATH} of=/dev/${RAW_DEVICE_NAME}

  else
    echo "ERROR: Failed final confirmation"
    exit
  fi

}

trap EXIT

runDiskFree
getDeviceName