在CentOS系统中，编写一个用于管理SQL数据库的脚本可以帮助自动化常见的任务，如备份、恢复、启动和停止服务等。以下是一个简单的示例脚本，用于管理MySQL数据库。请根据你的具体需求进行调整。
示例脚本：manage_mysql.sh#!/bin/bash# 数据库配置DB_HOST="localhost"DB_USER="root"DB_PASSWORD="your_password"DB_NAME="your_database"# 备份目录BACKUP_DIR="/var/backups/mysql"# 创建备份目录（如果不存在）mkdir -p $BACKUP_DIR# 获取当前日期DATE=$(date +%Y%m%d%H%M%S)# 备份函数backup_database() {echo "Starting database backup..."mysqldump -h $DB_HOST -u $DB_USER -p$DB_PASSWORD $DB_NAME > $BACKUP_DIR/$DB_NAME-$DATE.sqlif [ $? -eq 0 ]; thenecho "Database backup completed successfully."elseecho "Database backup failed."fi}# 恢复函数restore_database() {echo "Starting database restore from $1..."mysql -h $DB_HOST -u $DB_USER -p$DB_PASSWORD $DB_NAME < $1if [ $? -eq 0 ]; thenecho "Database restore completed successfully."elseecho "Database restore failed."fi}# 显示帮助信息usage() {echo "Usage: $0 {backup|restore|start|stop}"exit 1}# 根据参数执行相应操作case "$1" inbackup)backup_database;;restore)if [ -z "$2" ]; thenecho "Please specify the backup file to restore."usagefirestore_database $2;;start)echo "Starting MySQL service..."systemctl start mysqldif [ $? -eq 0 ]; thenecho "MySQL service started successfully."elseecho "Failed to start MySQL service."fi;;stop)echo "Stopping MySQL service..."systemctl stop mysqldif [ $? -eq 0 ]; thenecho "MySQL service stopped successfully."elseecho "Failed to stop MySQL service."fi;;*)usage;;esacexit 0- 保存脚本：将上述脚本保存为
manage_mysql.sh。修改配置：根据你的数据库配置修改脚本中的 DB_HOST, DB_USER, DB_PASSWORD, DB_NAME 和 BACKUP_DIR。赋予执行权限：chmod +x manage_mysql.sh./manage_mysql.sh backup./manage_mysql.sh restore /path/to/backup/file.sql./manage_mysql.sh start./manage_mysql.sh stop通过这种方式，你可以编写一个基本的SQL数据库管理脚本，并根据需要进行扩展和定制。
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