代码：

#!/bin/bash

#这是一个mysql备份的通用脚本
#颜色设置
RED='\E[1;31m'
GREEN='\E[1;32m'
RES='\E[0m'

#mysql备份参数
DB_USER="root"
DB_PASSWORD="123456"
DB_HOST="127.0.0.1"
DB_NAME="docker"
BACKUP_DIR="/mysql/backup/"
DATE=$(date +%Y%m%d%H%M%S)

#创建备份文件夹
mkdir -p $BACKUP_DIR/$DATE
BACK_FILE="$BACKUP_DIR/$DATE/$DB_NAME-$DATE.sql"

#执行备份命令
mysqldump --user=${DB_USER} --password=${DB_PASSWORD} --host=${DB_HOST} ${DB_NAME} > ${BACK_FILE}

#检查是否成功
if [[ $? -eq 0 ]];then
        echo -e "${GREEN} Mysql Backup Success! ${RES}"
else
        echo -e "${RED} Mysql Backup Failed! ${RES}"
        exit 1
fi
         

运行：