backup script

backup.sh

#!/bin/bash
set -o nounset

DEST=/mnt/backup/l
INCLUDE=/etc/backup-include
EXCLUDE=/etc/backup-exclude
LOGPATH=/var/log
MAX=100m

#if ! mount | grep -q $DEST; then
#        echo Nincs mountolva mentes;
#        exit;
#fi
[ -d $DEST ] || exit

declare -a retval_map
retval_map=([23]=0 [24]=0);

retval_mapping() {
	local retval=$?
	test ${retval_map[$retval]+defined} && \
	[ -n ${retval_map[$retval]} ] && retval=${retval_map[$retval]};
	return $retval
}

DATE=`date "+%Y-%m-%d-%H%M%S"`

rsync \
	--sparse \
	--xattrs \
	--delete \
	--archive \
	--progress \
	--recursive \
	--hard-links \
	--numeric-ids \
	--human-readable \
	--one-file-system \
	--max-size="${MAX}" \
	--files-from="${INCLUDE}" \
	--exclude-from="${EXCLUDE}" \
	--link-dest="${DEST}/Latest" \
	--log-file="${LOGPATH}/backup_${DATE}_log.txt" \
	$@ \
	/ "$DEST/${DATE}.inProgress"
	retval_mapping && \
	mv -v  "${DEST}/${DATE}.inProgress" "${DEST}/${DATE}" && \
	rm -vf "${DEST}/Latest" && \
	ln -vs "${DATE}" "${DEST}/Latest"