mariadb数据库完整备份

#!/bin/bash
username=root
hostname=localhost
password=hotdoor@123
File=zabbix_`date ‘+%m-%d-%Y‘`.dump
mysql -u$username -h$hostname -p$password -e "show databases"
/usr/bin/mysqldump -u$username -h$hostname -p$password --databases zabbix >/data/zabbix-backup/$File
    if [ $? -eq 0 ];then
        echo "---------backup OK-------"
     else
        echo "-------backup close------"
        exit
    fi