自动备份Mysql数据库脚本

[root@bogon ~]# cat auto_backup_mysql.sh 
#!/bin/bash
#auto backup mysql db
#by authors wugk 2014
#define backup path
BAK_DIR=/data/backup/`date +%Y%m%d`
MYSQLDB=cacti
MYSQLUSR=backup
MYSQLPW=123456
MYSQLCMD=/usr/bin/mysqldump

if [ $UID -ne 0 ];then
    echo "Must to be use root for exec shell."
    exit
fi

if [ ! -d $BAK_DIR ];then
    mkdir -p $BAK_DIR
    echo -e "\033[32mThe $BAK_DIR Create Successfully!\033[0m"
else
    echo "This $BAK_DIR is exists..."
fi

#Mysql BACKUP COMMAND
$MYSQLCMD -u$MYSQLUSR -p$MYSQLPW -d $MYSQLDB > $BAK_DIR/$MYSQLDB.sql
if [ $? -eq 0 ];then
    echo -e "\033[32mThe Mysql Backup $MYSQLDB Successfully!\033[0m"
else
    echo -e "\033[32mThe Mysql Backup $MYSQLDB Failed, please check.\033[0m"
fi