Backupscript Problem

#! /bin/bash 
#
# Author: oc2pus
# Changelog: 29.03.2004 - initial release
#
# Todo: read --prune and directorylist from external config file /etc/myBackup.conf

#set -x
umask 022

# get mode from commandline
MODE=INC
if [ "$1" = "FULL" ]; then
	MODE=FULL
fi

# the name of this stuff
PROGNAME=`basename $0`

# directory for backups
DAR_VERZ=/local/backup

# single logfile for logging the backup
LOG=$DAR_VERZ/dar.log

# name of dar manager database
DAR_DMD=$DAR_VERZ/backupMeinPC.dmd

# name of each backup
DAR_BASE="$DAR_VERZ/backupMeinPC_"`date -I`

# dar command extension for incremantal backup
DAR_INC=""

# name of last archive
DAR_PREV=""

###############################################################################
# First the ls command creates a list of the files with .dar extension in the backup directory.
# By default ls displays files alphabetically.
# tail is used to get the last file with the -n 1 switch, which says to display only the last line.
# DAR wants to operate on filenames without slice number and extension.
# This means that if we don't get rid of the tail, DAR will stop the operation and ask an
# interactive question to the user, defeating the purpose of automation.
# We separate the complete filename with awk. The awk command separates the string at the dots,
# and prints the first column. The result is the base name we want to pass DAR
###############################################################################
function searchLastArch ()
{
	DAR_NEWARCH=$1
	DAR_NEWARCHNAME="$DAR_NEWARCH".1.dar

	if [ -f $DAR_NEWARCHNAME ]; then
		clearArch
	fi
	setPrevName
}

###############################################################################
#
###############################################################################
function clearArch ()
{
	rm -r $DAR_NEWARCHNAME

        # remove dmd-entry
	SUCHE_DAR=`basename $DAR_NEWARCH`
        DAR_NR=`/usr/bin/dar_manager -B $DAR_DMD -l | grep $SUCHE_DAR | /usr/bin/awk -F ' ' '{print $1;}'`
        if [ ! -z $DAR_NR ]; then
        	echo "$PROGNAME: remove entry $DAR_NR from $DAR_DMD" >> $LOG
                /usr/bin/dar_manager -B $DAR_DMD -D $DAR_NR          >> $LOG 2>&1
        fi
}

###############################################################################
#
###############################################################################
function setPrevName ()
{
	DAR_PREV=`/bin/ls $DAR_VERZ/*.dar | /usr/bin/tail -n 1 | /usr/bin/awk -F '.' '{print $1;}'`
}

###############################################################################
# create list of actual installed packages
###############################################################################
function createRPMList ()
{
	echo "$PROGNAME: creating list of installed RPMs..." >> $LOG
	/bin/rpm -qa | /usr/bin/sort > $DAR_VERZ/myActRPM-9.2
}

###############################################################################
# create dar manager database if necessary
###############################################################################
function createDARDatabase ()
{
	if [ ! -f $DAR_DMD  ]; then
        	echo "$PROGNAME: creating new $DAR_DMD ..." >> $LOG 2>&1
        	/usr/bin/dar_manager -C $DAR_DMD            >> $LOG 2>&1
	fi
}

###############################################################################
# main
###############################################################################
echo "$PROGNAME: `date`"                    > $LOG 
echo "$PROGNAME: starting $MODE backup..." >> $LOG

createRPMList

if [ "$MODE" = "FULL" ]; then
	DAR_ARCH=$DAR_BASE
	echo "$PROGNAME: creating backup $DAR_ARCH" >> $LOG

	# force rebuild of dar_manager database
	echo "$PROGNAME: removing $DAR_DMD" >> $LOG
	rm -f $DAR_DMD
else
	DAR_ARCH="$DAR_BASE"_diff

	searchLastArch $DAR_ARCH

	DAR_INC="-A $DAR_PREV"
	echo "$PROGNAME: incremental backup $DAR_ARCH is based on $DAR_PREV" >> $LOG
fi

# start backup
/usr/bin/dar \
	--no-warn \
	--create $DAR_ARCH \
	-s 675M \
	-y \
	-v \
	-Z "*.mp3"   -Z "*.avi" -Z "*.mpg"  -Z "*.mpeg" \
	-Z "*.divx"  -Z "*.rm"  -Z "*.wmv"  -Z "*.wma" \
	-Z "*.asf"   -Z "*.ra" \
	-Z "*.gif"   -Z "*.jpg" -Z "*.jpeg" -Z "*.png" \
	-Z "*.zip"   -Z "*.tgz" -Z "*.gzip" -Z "*.bzip" \
	-Z "*.bzip2" -Z "*.rar" -Z "*.Z" \
	--fs-root / \
	etc \
	--prune etc/X11/xserver/C/print/models \
	var/lib \
	--prune var/lib/rpm \
	var/adm \
	--prune var/adm/backup \
	--prune var/lib/nfs \
	usr/local \
	--prune usr/local/bin/BitTornado-0.1.2 \
	root \
	--prune root/.mozilla/root/egrkbfkn.slt \
	--prune root/.phoenix \
	--prune root/.kde/share/cache \
	home \
	--prune home/oc2pus/tmp \
	--prune home/oc2pus/Multimedia \
	--prune home/oc2pus/.thumbnails \
	--prune home/oc2pus/.mozilla/default/r4qcjbgo.slt/Cache \
	--prune home/oc2pus/.firefox/default/dbrvfhgg.slt/Cache \
	--prune home/oc2pus/.firefox/default/dbrvfhgg.slt/Cache.Trash \
	--prune home/oc2pus/.kde/share/cache \
	--prune home/oc2pus/.kde/share/config/session \
	--prune home/oc2pus/.kde/share/apps/RecentDocuments \
	--prune home/oc2pus/orbit-oc2pus \
	boot/grub/menu.lst \
	$DAR_INC                                    >> $LOG 2>&1

# create dar manager database if necessary
createDARDatabase

echo "$PROGNAME: append backupdata to $DAR_DMD ..." >> $LOG 2>&1
/usr/bin/dar_manager -B $DAR_DMD -A $DAR_ARCH       >> $LOG 2>&1

echo "$PROGNAME: content of $DAR_DMD:"              >> $LOG
/usr/bin/dar_manager -B $DAR_DMD -l                 >> $LOG 2>&1

echo "$PROGNAME: `date`"                            >> $LOG 
echo "$PROGNAME: backup finished"                   >> $LOG

exit 0