diff --git a/update_github_hosts.sh b/update_github_hosts.sh
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+#!/bin/bash
+
+# 脚本名称: update_github_hosts.sh
+# 描述: 将github-hosts/hosts文件中的内容添加到系统hosts文件中，以加速GitHub访问
+# 作者: Craft AI Assistant
+# 创建日期: $(date +%Y-%m-%d)
+
+# 颜色定义
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[0;33m'
+NC='\033[0m' # No Color
+
+# 检查是否以root权限运行
+if [ "$(id -u)" -ne 0 ]; then
+    echo -e "${RED}错误: 此脚本需要root权限来修改hosts文件${NC}"
+    echo -e "请使用 ${YELLOW}sudo $0${NC} 重新运行此脚本"
+    exit 1
+fi
+
+# 定义文件路径
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+GITHUB_HOSTS_FILE="${SCRIPT_DIR}/hosts"
+SYSTEM_HOSTS_FILE="/etc/hosts"
+BACKUP_HOSTS_FILE="/etc/hosts.bak.$(date +%Y%m%d%H%M%S)"
+
+# 检查github-hosts文件是否存在
+if [ ! -f "$GITHUB_HOSTS_FILE" ]; then
+    echo -e "${RED}错误: github-hosts文件不存在: ${GITHUB_HOSTS_FILE}${NC}"
+    exit 1
+fi
+
+# 备份当前hosts文件
+echo -e "${YELLOW}备份当前hosts文件到 ${BACKUP_HOSTS_FILE}...${NC}"
+cp "$SYSTEM_HOSTS_FILE" "$BACKUP_HOSTS_FILE"
+
+# 提取github-hosts文件中的内容
+echo -e "${YELLOW}提取github-hosts文件中的内容...${NC}"
+GITHUB_HOSTS_CONTENT=$(sed -n '/# Generated by hosts-generator start/,/# Generated by hosts-generator end/p' "$GITHUB_HOSTS_FILE")
+
+# 检查系统hosts文件中是否已包含github-hosts标记
+if grep -q "# Generated by hosts-generator start" "$SYSTEM_HOSTS_FILE"; then
+    echo -e "${YELLOW}系统hosts文件中已包含github-hosts内容，正在更新...${NC}"
+    # 删除旧的github-hosts内容
+    sed -i '/# Generated by hosts-generator start/,/# Generated by hosts-generator end/d' "$SYSTEM_HOSTS_FILE"
+fi
+
+# 添加github-hosts内容到系统hosts文件
+echo -e "${YELLOW}添加github-hosts内容到系统hosts文件...${NC}"
+echo "" >> "$SYSTEM_HOSTS_FILE"
+echo "$GITHUB_HOSTS_CONTENT" >> "$SYSTEM_HOSTS_FILE"
+
+echo -e "${GREEN}完成! GitHub hosts已成功更新!${NC}"
+echo -e "原hosts文件已备份到: ${YELLOW}${BACKUP_HOSTS_FILE}${NC}"
+
+# 刷新DNS缓存（根据不同系统可能需要不同的命令）
+echo -e "${YELLOW}尝试刷新DNS缓存...${NC}"
+
+# 尝试使用不同的方法刷新DNS缓存
+DNS_FLUSHED=false
+
+# 对于使用 systemd-resolved 的系统
+if command -v resolvectl &> /dev/null; then
+    resolvectl flush-caches
+    echo -e "${GREEN}DNS缓存已刷新 (resolvectl)${NC}"
+    DNS_FLUSHED=true
+elif command -v systemd-resolve &> /dev/null; then
+    systemd-resolve --flush-caches
+    echo -e "${GREEN}DNS缓存已刷新 (systemd-resolve)${NC}"
+    DNS_FLUSHED=true
+fi
+
+# 对于使用 nscd 的系统
+if command -v systemctl &> /dev/null && systemctl is-active --quiet nscd; then
+    systemctl restart nscd
+    echo -e "${GREEN}DNS缓存已刷新 (nscd)${NC}"
+    DNS_FLUSHED=true
+fi
+
+# 对于较旧的Ubuntu/Debian系统
+if [ -f /etc/init.d/dns-clean ]; then
+    /etc/init.d/dns-clean start
+    echo -e "${GREEN}DNS缓存已刷新 (dns-clean)${NC}"
+    DNS_FLUSHED=true
+fi
+
+# 对于macOS系统
+if command -v dscacheutil &> /dev/null; then
+    dscacheutil -flushcache
+    if command -v killall &> /dev/null; then
+        killall -HUP mDNSResponder 2>/dev/null || true
+    fi
+    echo -e "${GREEN}DNS缓存已刷新 (macOS)${NC}"
+    DNS_FLUSHED=true
+fi
+
+# 如果所有方法都失败了
+if [ "$DNS_FLUSHED" = false ]; then
+    echo -e "${YELLOW}提示: 未能自动刷新DNS缓存${NC}"
+    echo -e "${YELLOW}你可以尝试以下方法之一:${NC}"
+    echo -e "1. 重启网络服务: ${YELLOW}sudo service network-manager restart${NC}"
+    echo -e "2. 重启网络接口: ${YELLOW}sudo ifdown -a && sudo ifup -a${NC}"
+    echo -e "3. 重启系统"
+fi
+
+echo -e "${GREEN}现在你应该可以更快地访问GitHub了!${NC}"
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