Simple backup file use it with crontab

backup.sh

#!/bin/sh
now="$(date +'%Y_%m_%d_%H_%M')"
filename_app="CRM_APP_$now".tar.gz
filename_db="CRM_DB_$now".sql.gz
backupfolder="/home/backup"
backupfolder_app="/var/www/website"
fullpathbackupfile_db="$backupfolder/$filename_db"
fullpathbackupfile_app="$backupfolder/$filename_app"
# execute mysql
mysqldump -u user -pPasswd -h xxx.xxx.xxx.xxx databases | gzip -9 > "$fullpathbackupfile_db"
echo "$fullpathbackupfile_db"
# execute app folder
tar cfz "$fullpathbackupfile_app" "$backupfolder_app"
exit 0