shell 自动备份mysql数据库

#auto backup mysql db
#by authors dxw 2017
#dufine backup path
BAK_DIR=/data/backup/`date +%Y%m%d`
MYSQLDB=syuee
MYSQLUSR=syuee
MYSQLPW=123456
MYSQLCMD=/usr/bin/mysqldump
#判断是否为root用户
if [ $UID -ne 0 ]; then
        echo "必须使用root用户执行。 "
        exit
fi
#如果BAK_DIR这个目录不存在则创建，否则打印存在
if [ ! -d $BAK_DIR  ];then
        mkdir -p $BAK_DIR
        echo -e "\033[32mThe $BAK_DIR Create Succsessfully!\033[0m"
else
        echo -e "\033[32m This $BAK_DIR is exists...\033[0m"
fi
$MYSQLCMD -u$MYSQLUSR -p$MYSQLPW -d $MYSQLDB > $BAK_DIR/$MYSQLDB.sql
if [ $? -eq 0 ];then
        echo -e "\033[32m The mysql backup $musqldb successfully !\033[0m"
else
        echo -e "\033[32m the mysql backup $mysql_db Failedm please check.\033[0m"
fi

0 0 * * * /bin/bash /data/shell/auto_backup_mysql.sh >>/tmp/mysql_bak.log 2>&1