From 810c80aeb068372b5e1a94f804433dd0f62e5e26 Mon Sep 17 00:00:00 2001
From: sobber <xiaolaome@gmail.com>
Date: Wed, 24 Sep 2025 12:03:00 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20shell?=
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---
 shell/ntp_auto.sh | 141 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 shell/ntp_auto.sh

diff --git a/shell/ntp_auto.sh b/shell/ntp_auto.sh
new file mode 100644
index 0000000..9a4b476
--- /dev/null
+++ b/shell/ntp_auto.sh
@@ -0,0 +1,141 @@
+#!/bin/bash
+
+# 自动安装ntpdate并配置定时校时服务
+# 需要root权限执行
+
+if [ "$(id -u)" != "0" ]; then
+    echo "错误：此脚本必须以root权限运行！" >&2
+    exit 1
+fi
+
+# 检测包管理器和系统类型
+detect_package_manager() {
+    if command -v apt-get &> /dev/null; then
+        PM="apt-get"
+        UPDATE_CMD="$PM update -y"
+        INSTALL_CMD="$PM install -y"
+        NTP_PACKAGE="ntpdate"
+        CRON_PACKAGE="cron"
+        CRON_SERVICE="cron"
+    elif command -v dnf &> /dev/null; then
+        PM="dnf"
+        UPDATE_CMD="$PM check-update || true"
+        INSTALL_CMD="$PM install -y"
+        NTP_PACKAGE="ntpdate"
+        CRON_PACKAGE="cronie"
+        CRON_SERVICE="crond"
+    elif command -v yum &> /dev/null; then
+        PM="yum"
+        UPDATE_CMD="$PM check-update || true"
+        INSTALL_CMD="$PM install -y"
+        NTP_PACKAGE="ntpdate"
+        CRON_PACKAGE="cronie"
+        CRON_SERVICE="crond"
+    elif command -v pacman &> /dev/null; then
+        PM="pacman"
+        UPDATE_CMD="$PM -Sy --noconfirm"
+        INSTALL_CMD="$PM -S --noconfirm"
+        NTP_PACKAGE="ntpdate"
+        CRON_PACKAGE="cronie"
+        CRON_SERVICE="crond"
+    else
+        echo "错误：未检测到支持的包管理器（apt-get, dnf, yum, pacman）" >&2
+        exit 1
+    fi
+    echo "检测到系统包管理器: $PM"
+}
+
+# 检查并安装crontab
+check_crontab() {
+    echo "检查cron服务..."
+    if ! command -v crontab &> /dev/null; then
+        echo "未检测到crontab，正在安装$CRON_PACKAGE..."
+        eval $UPDATE_CMD
+        eval $INSTALL_CMD $CRON_PACKAGE
+        
+        # 启动并设置开机自启
+        if command -v systemctl &> /dev/null; then
+            systemctl start $CRON_SERVICE
+            systemctl enable $CRON_SERVICE
+        elif command -v service &> /dev/null; then
+            service $CRON_SERVICE start
+            chkconfig $CRON_SERVICE on
+        else
+            echo "警告：无法自动启动cron服务，请手动启动" >&2
+        fi
+        
+        # 验证安装
+        if ! command -v crontab &> /dev/null; then
+            echo "错误：cron服务安装失败，请手动安装后重试" >&2
+            exit 1
+        fi
+        echo "cron服务安装成功"
+    else
+        echo "检测到crontab已安装"
+        # 确保服务运行
+        if command -v systemctl &> /dev/null && ! systemctl is-active --quiet $CRON_SERVICE; then
+            echo "cron服务未运行，正在启动..."
+            systemctl start $CRON_SERVICE
+            systemctl enable $CRON_SERVICE
+        elif command -v service &> /dev/null && ! service $CRON_SERVICE status &> /dev/null; then
+            echo "cron服务未运行，正在启动..."
+            service $CRON_SERVICE start
+        fi
+    fi
+}
+
+# 主流程
+detect_package_manager
+check_crontab
+
+# 设置默认NTP服务器
+DEFAULT_SERVER="pool.ntp.org"
+TARGET_SERVER=""
+
+# 获取用户输入
+echo "请输入NTP服务器地址（直接回车使用默认值 $DEFAULT_SERVER）:"
+read USER_INPUT
+
+if [ -z "$USER_INPUT" ]; then
+    TARGET_SERVER=$DEFAULT_SERVER
+    echo "使用默认NTP服务器: $TARGET_SERVER"
+else
+    TARGET_SERVER=$USER_INPUT
+    echo "使用自定义NTP服务器: $TARGET_SERVER"
+fi
+
+# 安装ntpdate
+echo "正在安装$NTP_PACKAGE..."
+eval $INSTALL_CMD $NTP_PACKAGE
+
+# 首次校时
+echo "正在进行首次校时..."
+ntpdate $TARGET_SERVER
+
+# 设置定时任务
+CRON_JOB="0 3 * * * /usr/sbin/ntpdate $TARGET_SERVER > /dev/null 2>&1"
+
+echo "正在配置定时任务（每天凌晨3点执行）..."
+if crontab -l | grep -q "ntpdate"; then
+    echo "检测到现有的ntpdate定时任务，正在更新..."
+    crontab -l | grep -v "ntpdate" | crontab -
+fi
+
+(crontab -l; echo "$CRON_JOB") | crontab -
+
+# 输出配置结果
+echo "----------------------------------------"
+echo "已成功配置NTP定时校时服务！"
+echo "服务器: $TARGET_SERVER"
+echo "执行时间：每天凌晨3点"
+echo "当前定时任务列表："
+crontab -l
+echo "----------------------------------------"
+
+# 检查服务状态
+echo "服务状态检查:"
+if ntpdate -q $TARGET_SERVER; then
+    echo "√ NTP服务配置成功"
+else
+    echo "× 连接测试失败，请检查网络或服务器地址"
+fi
\ No newline at end of file