#!/bin/bash
#
# Automated Backup System with Backup Rotation
#
# Copyright (c) Mesut Erdemir ( http://mesuterdemir.com )
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# The above copyright notice and this permission notice shall be included in
# all copies of the script.
#
# Add this script in cron tab in order to be executed once per day.
# Example (03:30 at night every day):
# 30 03 * * * /root/scripts/automated-backup.sh &> /dev/null
# 	      /root/scripts/automated-backup.sh > /var/log/automated-backup.log
#
# NOTE: If you redirect output to a file, you should define a log rotate job in /etc/logrotate.d
#
#
# Author: Mesut Erdemir
# Date: 2011-10-02 16:00:00


########### Variable Definitions ###########
SOURCEDIR="/home/mesut/Documents"	# Path to Source Folder
BACKUPDIR="/home/mesut/Backups"		# Path to Save Folder
DELETEOLDER=0	# Set 0 for Keep Previous Backups


########### Create Backup Directories #############
FDATE=`date +%F`	# Full Date, YYYY-MM-DD
# If Backup directory is not found, exit
if ([ ! -d $SOURCEDIR/ ] || [ ! -d $BACKUPDIR/ ]) ; then
	echo Backup or Source Directory not Exist!
	exit 0
fi
# If Backup has taken today, exit
if [ ! -d $BACKUPDIR/$FDATE/ ] ; then
	mkdir $BACKUPDIR/$FDATE/
else
	echo Daily Backup is Already Done. Exiting.
	exit 0
fi

########### Create Tar.Gz Archive #############
tar -czvPf $BACKUPDIR/$FDATE/backup$FDATE.tar.gz $SOURCEDIR/

########### Delete Previous Versions ###########
if [ $DELETEOLDER -gt 0 ] ; then
	echo ----------- DELETED FOLDERS -----------
	find $BACKUPDIR -maxdepth 1 -type d -mtime +$DELETEOLDER -exec echo {} \; -exec rm -rf {} \;
fi

# Done
exit 0