#!/bin/bash
#
# Bash script to
# synchronize Patriot usb drive (from Pluto Linux) to Jupiter server
# Author: Prabakar  8/24/10
#
# Add the following alias command in .bashrc
#   alias   syncusb='~/scripts/syncflash >> ~/scripts/rsync.log'
# and use  syncusb  to synchronize the usb drive from pluto terminal
#

sshcmd="ssh -i /home/$USER/sshpvtkeyfile -p 3576"
usbpath="/media/FLASH_DISK1"

homenet=`ifconfig | grep inet\ addr:192.168.1. | wc -l`

if [ $homenet  -ge 1 ]; then # currently connected to the home network
  server="serverInternalName"
else
  server="serverExternalName"
fi
serverpath="$USER@$server:/backuproot/usbdrives/prabu/Patriot16GB"

# choose direction of synchronization
# redirect stdout to stderr so that the output will be displayed without being sent to a log
echo "Synchronization direction:" 1>&2
echo "1. usb --> server " 1>&2
echo "2. server --> usb " 1>&2
read  -n1 -p "Choose 1 or 2? [1]: " direction
echo 1>&2
if [ -z $direction ]
 then
   direction=1
fi

echo 1>&2
date
if [ $direction -eq 2 ]
 then
   # synchronize server to usb
   echo "sync server::$serverpath/  -->  usb::$usbpath/" 1>&2
   echo 1>&2
   read -n1 -p "You may lose the USB data. Do you really want to do this (y/n)? [n]: " response
   echo 1>&2
   if [ -z $response ]
    then
      response="n"
   fi
   if [ $response = "y" ]
    then
      echo 1>&2
      rsync -avz -e "$sshcmd" $serverpath/ $usbpath/  2>&1
   fi
 else
 # synchronize usb to server; delete files on server that don't exist on the usb
   echo "sync usb::$usbpath/  -->  server::$serverpath/" 1>&2
   echo 1>&2
   rsync -avz --delete -e "$sshcmd" $usbpath/ $serverpath/  2>&1
fi
date
exit