生成一个交互式 bash wizard,引导人类逐步完成只有…

# Ubuntu 22.04 批量配置 AWS S3 备份向导脚本

一、设计思路

• 交互式向导逐步收集参数（Region、Bucket、凭证、备份路径、时间）
• 支持单台执行，配合 for 循环 + scp/ssh 批量分发到 10 台服务器
• 凭证写入 ~/.aws/credentials，权限设为 600

二、核心脚本（backup_wizard.sh）

```bash

#!/bin/bash

set -euo pipefail

echo "===== AWS S3 备份配置向导 ====="

read -rp "AWS Region (如 us-east-1): " REGION

read -rp "S3 Bucket 名称: " BUCKET

read -rp "AWS Access Key ID: " AK

read -rsp "AWS Secret Access Key: " SK; echo

read -rp "备份源目录 [默认 /data]: " SRC; SRC=${SRC:-/data}

read -rp "S3 前缀 [默认 backup]: " PREFIX; PREFIX=${PREFIX:-backup}

read -rp "每日执行时间 [默认 02:00]: " TIME; TIME=${TIME:-02:00}

read -rp "保留天数 [默认 7]: " KEEP; KEEP=${KEEP:-7}

# 1. 安装 AWS CLI v2（Ubuntu 22.04 默认 v1，建议升级）

if ! command -v aws &>/dev/null || aws --version 2>/dev/null | grep -q "aws-cli/1"; then

echo ">>> 安装 AWS CLI v2..."

curl -sS "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o /tmp/awscliv2.zip

apt-get install -y unzip && unzip -oq /tmp/awscliv2.zip -d /tmp

/tmp/aws/install --update

fi

# 2. 写入凭证

mkdir -p ~/.aws

cat > ~/.aws/credentials <<EOF

[default]

aws_access_key_id = ${AK}

aws_secret_access_key = ${SK}

EOF

cat > ~/.aws/config <<EOF

[default]

region = ${REGION}

EOF

chmod 600 ~/.aws/*

# 3. 验证连通性

echo ">>> 验证凭证..."

aws s3 ls "s3://${BUCKET}" >/dev/null && echo "✓ S3 访问正常" || { echo "✗ 访问失败，请检查凭证/权限"; exit 1; }

# 4. 生成备份脚本

cat > ~/s3_backup.sh <<EOF

#!/bin/bash

aws s3 sync "${SRC}" "s3://${BUCKET}/${PREFIX}/\$(hostname)/" --delete-excluded

# 清理过期对象

aws s3 ls "s3://${BUCKET}/${PREFIX}/\$(hostname)/" --recursive | while read -r line; do

createDate=\$(echo \$line | awk '{