simple rsync backup

backup.sh

#!/bin/bash

set -o errexit

NAME=home
SOURCE=/home
PATHTOBACKUP=/root/backup

date=$(date "+%Y-%m-%dT%H:%M:%S")

rm -rf $PATHTOBACKUP/.tmp-$NAME

# --link-dest checks if the file exists in the previous backup
# and if yes, it creates a hard link
rsync \
	--archive \
	--verbose \
	--one-file-system \
	--log-file=$PATHTOBACKUP/.tmp-$NAME.log \
	--link-dest=$PATHTOBACKUP/$NAME-current \
	$SOURCE $PATHTOBACKUP/.tmp-$NAME

mv $PATHTOBACKUP/.tmp-$NAME.log $PATHTOBACKUP/$NAME-$date.log 
mv $PATHTOBACKUP/.tmp-$NAME $PATHTOBACKUP/$NAME-$date

ln --symbolic --force --no-dereference $NAME-$date $PATHTOBACKUP/$NAME-current