hello_world

---
title: "hello_world"
date: 2025-11-09
draft: false
description: "无"
tags: ["日常更新"]
categories: ["默认分类"]

---
## 标题
--正文内容
---

#!/bin/bash
[root@linux ~]# crontab -l
0 4 * * * /root/send-blog-backup.sh >/dev/null 2>&1

#!/bin/bash

# -----------------------------
# 配置
# -----------------------------
BACKUP_DIR=~/blog-backups
SOURCE_DIR=/opt/blog
TO="i@protonmail.com" 
FROM="i@gmail.com" 
SUBJECT="blog backup $(date +%Y%m%d)"
ACCOUNT="google"   # msmtp 配置的谷歌邮箱账户
KEEP_DAYS=7
ZIP_PASSWORD="你的密码"  # 设置压缩包密码

# -----------------------------
# 创建备份目录
# -----------------------------
mkdir -p "$BACKUP_DIR"

# -----------------------------
# 给 md 文件加 UTF-8 BOM（临时目录）
# -----------------------------
TMP_DIR=$(mktemp -d)
cp -r "$SOURCE_DIR"/* "$TMP_DIR"/

# 为每个 md 文件加 BOM
for f in "$TMP_DIR"/*.md; do
    if [ -f "$f" ]; then
        # 检查文件是否已经有 BOM
        if ! head -c 3 "$f" | grep -q $'\xEF\xBB\xBF'; then
            # 给文件加 BOM
            (echo -ne '\xEF\xBB\xBF'; cat "$f") > "${f}.bom" && mv "${f}.bom" "$f"
        fi
    fi
done

# -----------------------------
# 生成 ZIP 压缩包
# -----------------------------
BACKUP_FILE="$BACKUP_DIR/blog-content-$(date +%Y%m%d).zip"
cd "$TMP_DIR"
zip -r -P "$ZIP_PASSWORD" "$BACKUP_FILE" ./*

# -----------------------------
# 获取备份信息
# -----------------------------
BACKUP_SIZE=$(du -h "$BACKUP_FILE" | cut -f1)
BACKUP_TIME=$(date +"%Y-%m-%d %H:%M:%S")

BODY="备份已完成：
路径：$BACKUP_FILE
大小：$BACKUP_SIZE
创建时间：$BACKUP_TIME
压缩密码已设置。"

# -----------------------------
# 发送邮件（msmtp + base64）
# -----------------------------
BOUNDARY="ZZ_/afg6432dfgkl.94531q"

(
echo "From: ${FROM}"
echo "To: ${TO}"
echo "Subject: ${SUBJECT}"
echo "MIME-Version: 1.0"
echo "Content-Type: multipart/mixed; boundary=\"$BOUNDARY\""
echo
echo "--$BOUNDARY"
echo "Content-Type: text/plain; charset=UTF-8"
echo "Content-Transfer-Encoding: 7bit"
echo
echo "$BODY"
echo
echo "--$BOUNDARY"
echo "Content-Type: application/zip; name=\"$(basename $BACKUP_FILE)\""
echo "Content-Transfer-Encoding: base64"
echo "Content-Disposition: attachment; filename=\"$(basename $BACKUP_FILE)\""
echo
openssl base64 -A -in "$BACKUP_FILE" | fold -w 76
echo
echo "--$BOUNDARY--"
) | msmtp -a "$ACCOUNT" "$TO"

# -----------------------------
# 删除临时目录
# -----------------------------
rm -rf "$TMP_DIR"

# -----------------------------
# 删除 7 天前的旧备份
# -----------------------------
find "$BACKUP_DIR" -type f -name "blog-content-*.zip" -mtime +$KEEP_DAYS -exec rm -f {} \;