bkp-rsync-var-inc.sh

#!/bin/bash

# A script to perform incremental backups using rsync

set -o errexit
set -o nounset
set -o pipefail

readonly SOURCE_DIR="/var/log"
readonly BACKUP_DIR="/mnt/data/backup"
readonly DATETIME="$(date '+%Y-%m-%d_%H:%M:%S')"
readonly BACKUP_PATH="${BACKUP_DIR}/${DATETIME}"
readonly LATEST_LINK="${BACKUP_DIR}/latest"

if [ -d "$BACKUP_DIR"  ] ; then
    echo "Diretorio existe"
else
    mkdir -p "${BACKUP_DIR}"
fi

rsync -av --delete \
  "${SOURCE_DIR}/" \
  --link-dest "${LATEST_LINK}" \
  --exclude=".cache" \
  "${BACKUP_PATH}"

rm -rf "${LATEST_LINK}"
ln -s "${BACKUP_PATH}" "${LATEST_LINK}"