#! /bin/bash
# /usr/local/bin/Backup_1.0.8.sh
#
# See http://www.jperkins.us/computer/backups/
# Author: Jerry Perkins, Nashville, Tennessee
# Last revision August 20, 2008
# Version 1.0.8
#
# Purpose: To make incremental backups.
#
# --------- COMMENTS ----------------------
#
#    I burn the Monthly and Weekly backups to DVD.
#
#    But the Hourly and Daily backups are cleaned out using
# the cleanup script, Backup_Cleanup.sh.  This script needs
# to be configured.
#
# --------- SETUP ----------------------
#
#    Create a directory in your backup partition for
# each of the periods that you will backup.  Such as
# Hourly, Daily, Weekly, Monthly.
#
#    Save as this script to /usr/local/bin.  Then copy to
# the needed active scripts such as Backup_Hourly.sh,
# Backup_Daily.sh, Backup_Weekly.sh, and Backup_Monthly.sh.
#    Make sure that each of this scripts is set as
# exacutable.  Then configure each script using the 
# Configure Section below.
#
# --------- CONFIGURE SECTION ----------
#
#    Set path to directory where to backups will be stored.
# Examples:
#    STORAGE="/mnt/backups/Monthly"
#    STORAGE="/mnt/Big_Storage/Backups/Monthly"
#    STORAGE="/mnt/backups/To_DVD"
STORAGE="/mnt/backups/test"
#
#
#    List the directories that are to be backed up.
# Example, "/etc /home /usr/local" will backup everything
# in /etc, /home and /usr/local.  If you do /home/*, a 
# separate tar bar will be created for each 
# sub-directory in /home.
#    /etc - Low volumne.  I run this on all, which has 
# gotten me out of jams.  I use on all backups.
#    /home - For multi users use /home/*.  A lot of traffic
# from browser and email.  I use on all backups.
#    /opt  - May not need, but should check.
#    /root - Low traffic.  I use on all backups.
#    /srv - Only if you use this.  I have Samba shares and 
# web site.
#    /usr/local - All other /usr is static.  This should 
# contain your local scripts, logs, etc.
#    /var - Will fill up with a lot of junk.   But you may 
# want to capture weekly your MySQL.  Also if you have your 
# web server running, /var/www.   I do a daily /var/* just 
# to see the traffic volumne. 
#
#    You can also backup remote directories that are 
# mounted.  Example shows a backup to a Microsoft 
# directory.  WARNING, do not use directory names that 
# contain a space, such as "My Documents".  But you can use
# "My*". Warning, I have not tested the "*" since major
# changes to script.  There also can be security issues
# with sharing Microsoft files.
#    PATHLIST="/mnt/c-drive/WINDOWS/Profiles /mnt/c-drive/WINDOWS/My*"
#
# Examples:
#    PATHLIST="/etc /home/* /root /srv/* /usr/local /var/*"
#    PATHLIST="/etc /home/ /opt /root /srv /usr/local /var/www"
PATHLIST="/etc /home/* /root /srv/* /opt /usr/local /var/lib/mysql /var/www"
#
#
#    Tar ball pre-name.  This puts a name or letter at the
# beginning of the tar ball.
#    Hence file root_2008-08-20.tar.gz with PRE="Daily-" becomes 
# Daily-root_2008-08-20.tar.gz
# Examples:
#    PRE="D-"
#    PRE="Weekly-"
#    PRE=""     (To leave it empty)
PRE=""
#
#
#    Set the time to be used:
#    minutes is "minute"
#    days is "day"
TIMETYPE="minute"
#
#
#    Set the period of time between backups.  If time is
#  in minutes, add one minute.
#    Note that the days goes till midnight.  So that if you
# do a daily backup 10 minutes after midnight and set PERIOD="-1"
# you get only the last 10 minutes, so set PERIOD="-2".
# For mid-day backup use minutes, hence MINDAY="-mmin" and
# PERIOD="-1442"  (24 hours times 60 minutes plus 2).  For a weekly
# backup in minutes use PERIOD="-10082" 
# Example:
#    PERIOD="-7"    (for 7 days)
#    PERIOD="-121"  (for 2 minutes)
PERIOD="-121"
#
#
# Set User Name. This the owner of each tar ball.
FILEOWNER="root"
#
#
# Set Group Name. This the group of each tar ball.
FILEGROUP="js"
#
#
# Set permissions. Suggest either 400 for owner read or 
# 440 for owner and group read.
PERM="440"
#
#
# --------- CRON NOTES ----------
#
# Set each script to run in cron.
#
#
# --------- NO EDITING BELOW THIS LINE ----------
#
if [ $TIMETYPE == "day" ]
   then
      MINDAY="-mtime"
      DAYNAME=`date +%Y-%m-%d`
   else
   if [ $TIMETYPE == "minute" ]
      then
         MINDAY="-mmin"
         DAYNAME=`date +%Y-%m-%d-%H`
      else
         echo "Error in TIME variable.";
         echo "Needs to be \"day\" or \"minute\".";
         exit
   fi
fi
FILEPOST=".tar.gz"
DASH="_"
if [ -e $STORAGE ]
    then
        cd $STORAGE
        for LIST in $PATHLIST
        do
            LISTROOT=`echo "$LIST" | colrm 1 1`
            DIRNAME=`echo "$LISTROOT"| sed "s/\//_/g"`
            FILENAME=$PRE$DIRNAME$DASH$DAYNAME$FILEPOST
            if [ -e $LIST ]
                then
                    find $LIST $MINDAY $PERIOD -type f | tar zcfP $FILENAME -T-
            fi
        done
        CHGALL="*"$DAYNAME$FILEPOST      
		  chown $FILEOWNER $CHGALL
        chgrp $FILEGROUP $CHGALL
		  chmod $PERM $CHGALL
#       Removes empty backups.
        find $STORAGE -size 45c -type f -exec rm {} \;
        find $STORAGE -size 0c -type f -exec rm {} \;
fi
# END