I need a script for my Raspbery Pi that backs up my GO PRO videos to my external hard drive when both are plugged in. The Pi will be mounted on my motorcycle and this allows me to just plug in both sd card and external hard drive and auto backs up without any input from me.

piCopyVideoFiles.py

#!/usr/bin/python

import subprocess
from pprint import pprint
import sys
import errno
from time import gmtime, strftime
import os

MOUNT_FOLDER = 'media' #Where the OS mounts the drives.
MIN_SD_CARD_SIZE = 0 #Minimum SD card size to look for.
MAX_SD_CARD_SIZE = 35000000 #Max SD card size to look for, which is a 32GB card for me.
FILE_TYPES = ['MP4'] #The file types to look for on the sd card.
TIMESTAMP_FORMAT = "%Y%m%d-%H%M%S" #The timestamp format to create a folder with on the TO drive.

def get_media_drives():
	global MOUNT_FOLDER
	
	rough_drives = subprocess.check_output('df').split("\n")
	drives = {}
	for rdrive in rough_drives:
		if MOUNT_FOLDER in rdrive:
			items = rdrive.split()
			drives[items[5]] = items[3]
	return drives 

def get_biggest_drive_name(drives):
	biggestDrive = 0
	biggestDriveName = ""
	for name in drives.keys():
		if(drives[name] > biggestDrive):
			biggestDrive = drives[name]
			biggestDriveName = name
	return biggestDriveName

def get_sd_drive_name(drives):
	global MIN_SD_CARD_SIZE
	global MAX_SD_CARD_SIZE

	for name in drives.keys():
		if MIN_SD_CARD_SIZE < int(drives[name]) < MAX_SD_CARD_SIZE:
			return name
	return ''

def videos_exist(loc):
	global FILE_TYPES
	for root, folder, files in os.walk(loc):
		for file in files:
			for type in FILE_TYPES:
				if file.upper().endswith(type.upper()):
					return True
	return False
	

drives = get_media_drives()
storageLoc = get_biggest_drive_name(drives)
sdCardLoc  = get_sd_drive_name(drives) 
newFolder = strftime(TIMESTAMP_FORMAT, gmtime())
#pprint(drives)
#print storageLoc
#print sdCardLoc

if(videos_exist(sdCardLoc) and storageLoc and sdCardLoc):
	print "rsync -av --progress --remove-source-files -zvh %s/*/*.MP4 %s/%s/" % (sdCardLoc, storageLoc, newFolder)
else:
	sys.exit(1)