#!/bin/bash src=/PATH/TO/SOURCE base=/PATH/TO/STORAGE keyfile=/PATH/TO/KEY excludes="--exclude=USELESS/** --exclude=TOBIG/**" user=USERNAME snarbase=$base backup_count=$(ls ${base}/backup.inc*.tgz.ssl 2>/dev/null | wc -l) backup_full=${base}/backup.tgz.ssl backup_inc=${base}/backup.inc$(ls ${base}/backup.inc*.tgz.ssl 2>/dev/null | wc -l).tgz.ssl backup_snar=${snarbase}/backup.snar if [ ! -f $backup_full ]; then echo "No previous Backup found => starting new level 0 Backup" backup=$backup_full backup_lvl=0 if [ -f $backup_snar ]; then echo "Snar file ($backup_snar) found without existing level 0 Backup, somethings probably broken." echo "Stopping for safety, either find the missing level 0 Backup or delete the snar file." exit fi else backup=$backup_inc backup_lvl=1 echo "Restoring snar base (backup)" cp ${backup_snar}.bak $backup_snar fi echo "* backup (level $backup_lvl) to: $backup ($backup_snar)" tar -cpz \ --listed-incremental=$backup_snar $excludes --exclude-backups --exclude-caches --exclude-tag-under=.TARIGNORE \ $src | su $user -c "openssl enc -e -aes256 -pass file:$keyfile -out $backup" if [ $backup_lvl -eq 0 ]; then echo "Creating snar base (backup)" cp $backup_snar ${backup_snar}.bak fi