backup /etc on ubuntu 12.04

because i need /etc .

 
 etc_backup.sh

 #!/bin/bash  
   
 # Script to backup the /etc heirarchy  
 #  
 # Written 4/2002 by Wayne Pollock, Tampa Florida USA  
 #  
 # $Id: backup-etc,v 1.6 2004/08/25 01:42:26 wpollock Exp $  
 #  
 # $Log: backup-etc,v $  
 #  
 # Revision 1.6 2004/08/25 01:42:26 wpollock  
 # Changed backup name to include the hostname and 4 digit years.  
 #  
 # Revision 1.5 2004/01/07 18:07:33 wpollock  
 # Fixed dots routine to count files first, then calculate files per dot.  
 #  
 # Revision 1.4 2003/04/03 08:10:12 wpollock  
 # Changed how the version number is obtained, so the file  
 # can be checked out normally.  
 #  
 # Revision 1.3 2003/04/03 08:01:25 wpollock  
 # Added ultra-fancy dots function for verbose mode.  
 #  
 # Revision 1.2 2003/04/01 15:03:33 wpollock  
 # Eliminated the use of find, and discovered that tar was working  
 # as intended all along! (Each directory that find found was  
 # recursively backed-up, so for example /etc, then /etc/mail,  
 # caused /etc/mail/sendmail.mc to be backuped three times.)  
 #  
 # Revision 1.1 2003/03/23 18:57:29 wpollock  
 # Modified by Wayne Pollock:  
 #  
 # Discovered not all files were being backed up, so  
 # added "-print0 --force-local" to find and "--null -T -"  
 # to tar (eliminating xargs), to fix the problem when filenames  
 # contain metacharacters such as whitespace.  
 # Although this now seems to work, the current version of tar  
 # seems to have a bug causing it to backup every file two or  
 # three times when using these options! This is still better  
 # than not backing up some files at all.)  
 #  
 # Changed the logger level from "warning" to "error".  
 #  
 # Added '-v, --verbose' options to display dots every 60 files,  
 # just to give feedback to a user.  
 #  
 # Added '-V, --version' and '-h, --help' options.  
 #  
 # Removed the lock file mechanism and backup file renaming  
 # (from foo to foo.1), in favor of just including a time-stamp  
 # of the form "yymmdd-hhmm" to the filename.  
 #  
 PATH=/bin:/usr/bin  
   
 REPOSITORY=/opt/etc_backups/  
 TIMESTAMP=$(date '+%Y%m%d')  
 HOSTNAME=$(hostname -s)  
 FILE="$REPOSITORY/$HOSTNAME-$TIMESTAMP.tgz"  
   
 ERRMSGS=/tmp/backup-etc.$$  
 PROG=${0##*/}  
 VERSION=$(echo $Revision: 1.6 $ |awk '{print$2}')  
 VERBOSE=off  
   
 usage()  
 { echo "This script creates a full backup of /etc via tar in $REPOSITORY."  
   echo "Usage: $PROG [OPTIONS]"  
   echo ' Options:'  
   echo '  -v, --verbose  displays some feedback (dots) during backup'  
   echo '  -h, --help   displays this message'  
   echo '  -V, --version  display program version and author info'  
   echo  
 }  
   
 dots()  
 { MAX_DOTS=50  
   NUM_FILES=`find /etc|wc -l`  
   let 'FILES_PER_DOT = NUM_FILES / MAX_DOTS'  
   bold=`tput smso`  
   norm=`tput rmso`  
   tput sc  
   tput civis  
   echo -n "$bold(00%)$norm"  
   while read; do  
    let "cnt = (cnt + 1) % FILES_PER_DOT"  
    if [ "$cnt" -eq 0 ]  
    then  
      let '++num_dots'  
      let 'percent = (100 * num_dots) / MAX_DOTS'  
      [ "$percent" -gt "100" ] && percent=100  
      tput rc  
      printf "$bold(%02d%%)$norm" "$percent"  
      tput smir  
      echo -n "."  
      tput rmir  
    fi  
   done  
   tput cnorm  
   echo  
 }  
   
 # Command line argument processing:  
 while [ $# -gt 0 ]  
 do  
   case "$1" in  
    -v|--verbose) VERBOSE=on; ;;  
    -h|--help)   usage; exit 0; ;;  
    -V|--version) echo -n "$PROG version $VERSION "  
            echo 'Written by Wayne Pollock <pollock@acm.org>'  
            exit 0; ;;  
    *)       usage; exit 1; ;;  
   esac  
   shift  
 done  
   
 trap "rm -f $ERRMSGS" EXIT  
   
 cd /etc  
   
 # create backup, saving any error messages:  
 if [ "$VERBOSE" != "on" ]  
 then  
   tar -cz --force-local -f $FILE . 2> $ERRMSGS  
 else  
   tar -czv --force-local -f $FILE . 2> $ERRMSGS | dots  
 fi  
   
 # Log any error messages produced:  
 if [ -s "$ERRMSGS" ]  
 then logger -p user.error -t $PROG "$(cat $ERRMSGS)"  
 else logger -t $PROG "Completed full backup of /etc"  
 fi  
   
 exit 0  
   

i have it running in system cron. prior to it executing, i have dpkg
run to output installed packages... this helps with system restore, if
needed.

 50 22  * * *  root  /usr/bin/dpkg --get-selections > /etc/package-list.txt  
 00 23  * * *  root  /usr/local/scripts/etc_backup.sh