refactor(init): 重构 Linux 初始化脚本

- 移除冗余的系统信息检测逻辑
- 优化 DNS 配置和时区设置
- 改进软件源配置，支持更多发行版
- 简化主执行逻辑，提高可读性

init/linux.sh

@@ -1,117 +1,90 @@
 #!/bin/bash
-
 set -euo pipefail
 
 echo "=== 通用 Linux 初始化脚本 ==="
 
-# 确保为 root
+# 获取系统信息
-if [ "$EUID" -ne 0 ]; then
+DISTRO_ID=$(grep ^ID= /etc/os-release | cut -d= -f2 | tr -d '"')
-    echo "请以 root 用户运行此脚本。" >&2
+DISTRO_NAME=$(grep ^PRETTY_NAME= /etc/os-release | cut -d= -f2 | tr -d '"')
-    exit 1
+CODENAME=$(lsb_release -cs 2>/dev/null || echo "")
-fi
 
-# 检测系统信息
+echo "检测到系统: $DISTRO_NAME"
-get_os_info() {
-    if [ -f /etc/os-release ]; then
-        . /etc/os-release
-        DISTRO_ID=$ID
-        DISTRO_NAME=$NAME
-        DISTRO_VERSION=$VERSION_ID
-    else
-        echo "无法识别系统类型。" >&2
-        exit 1
-    fi
-}
 
 # 设置 DNS
 set_dns() {
-    echo "设置 DNS..."
+    echo "配置 DNS 到 114.114.114.114 和 223.5.5.5..."
-    rm -f /etc/resolv.conf
+    echo -e "nameserver 114.114.114.114\nnameserver 223.5.5.5" > /etc/resolv.conf || true
-    cat > /etc/resolv.conf <<EOF
+}
-nameserver 114.114.114.114
+
-nameserver 223.5.5.5
+# 设置时区和同步时间
-EOF
+set_timezone() {
-    if command -v chattr &>/dev/null; then
+    echo "设置时区为 Asia/Shanghai..."
-        chattr +i /etc/resolv.conf || echo "警告: 无法锁定 resolv.conf"
+    ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime || true
+    if command -v timedatectl >/dev/null 2>&1; then
+        timedatectl set-timezone Asia/Shanghai || true
+        timedatectl set-ntp true || true
+    else
+        echo "timedatectl 不可用，尝试使用 ntpdate..."
+        (apt install -y ntpdate || yum install -y ntpdate || dnf install -y ntpdate) >/dev/null 2>&1 || true
+        ntpdate ntp.aliyun.com || true
     fi
 }
 
-# 设置时区和时间同步
+# 设置软件源
-set_timezone_and_time() {
-    echo "设置时区为 Asia/Shanghai..."
-    timedatectl set-timezone Asia/Shanghai 2>/dev/null || ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
-
-    echo "安装 ntpdate..."
-    $INSTALL_CMD ntpdate -y
-    echo "正在同步时间..."
-    ntpdate ntp.aliyun.com || echo "时间同步失败，请检查网络连接"
-}
-
-# 设置清华源
 set_mirrors() {
     echo "更换软件源为清华镜像..."
 
     case "$DISTRO_ID" in
-        debian|ubuntu|raspbian)
+        ubuntu)
-            CODENAME=$(lsb_release -cs 2>/dev/null || echo "stable")
+            cat > /etc/apt/sources.list <<EOF
+deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ ${CODENAME} main restricted universe multiverse
+deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ ${CODENAME}-updates main restricted universe multiverse
+deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ ${CODENAME}-backports main restricted universe multiverse
+deb http://security.ubuntu.com/ubuntu ${CODENAME}-security main restricted universe multiverse
+EOF
+            apt update -y || true
+            ;;
+
+        debian|raspbian)
             cat > /etc/apt/sources.list <<EOF
 deb https://mirrors.tuna.tsinghua.edu.cn/${DISTRO_ID}/ ${CODENAME} main contrib non-free non-free-firmware
 deb https://mirrors.tuna.tsinghua.edu.cn/${DISTRO_ID}/ ${CODENAME}-updates main contrib non-free non-free-firmware
 deb https://mirrors.tuna.tsinghua.edu.cn/${DISTRO_ID}/ ${CODENAME}-backports main contrib non-free non-free-firmware
 deb https://mirrors.tuna.tsinghua.edu.cn/${DISTRO_ID}-security ${CODENAME}-security main contrib non-free non-free-firmware
 EOF
-            apt update -y
+            apt update -y || true
             ;;
 
         centos|rhel|almalinux|rocky)
+            echo "配置 RHEL 系列清华镜像..."
             if [ -f /etc/yum.repos.d/CentOS-Base.repo ]; then
-                cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
+                sed -i.bak -e 's|^mirrorlist=|#mirrorlist=|g' \
+                           -e 's|^#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tuna.tsinghua.edu.cn|g' \
+                           /etc/yum.repos.d/CentOS-Base.repo
             fi
-            # shellcheck disable=SC2046
+            yum makecache || true
-            curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.tuna.tsinghua.edu.cn/help/centos/?date=$(date +%Y%m%d)
-            yum clean all && yum makecache
             ;;
 
         fedora)
-            dnf install -y dnf-plugins-core
+            echo "配置 Fedora 清华镜像..."
-            sed -i 's|^metalink=|#metalink=|g' /etc/yum.repos.d/fedora*.repo
+            sed -i.bak -e 's|^metalink=|#metalink=|g' \
-            sed -i 's|^#baseurl=http.*|baseurl=https://mirrors.tuna.tsinghua.edu.cn/fedora/linux/releases/$releasever/Everything/$basearch/os/|g' /etc/yum.repos.d/fedora.repo
+                       -e 's|^#baseurl=https://download.example/pub|baseurl=https://mirrors.tuna.tsinghua.edu.cn/fedora|g' \
-            dnf makecache
+                       /etc/yum.repos.d/fedora*.repo
+            dnf makecache || true
             ;;
 
         *)
-            echo "不支持的系统: $DISTRO_NAME"
+            echo "不支持的系统类型：$DISTRO_ID，跳过换源"
-            exit 1
             ;;
     esac
 }
 
-# 主程序
+# 主执行函数
-get_os_info
+main() {
+    set_dns
+    set_timezone
+    set_mirrors
+    echo "✅ 初始化完成。"
+}
 
-echo "检测到系统: $DISTRO_NAME $DISTRO_VERSION"
+main
-
-# 判断使用哪个包管理器
-if command -v apt &>/dev/null; then
-    INSTALL_CMD="apt install -y"
-    apt update -y
-elif command -v dnf &>/dev/null; then
-    INSTALL_CMD="dnf install -y"
-    dnf makecache
-elif command -v yum &>/dev/null; then
-    INSTALL_CMD="yum install -y"
-    yum makecache
-else
-    echo "不支持的包管理器。" >&2
-    exit 1
-fi
-
-# 安装通用工具
-$INSTALL_CMD curl wget lsb-release || true
-
-# 执行配置步骤
-set_mirrors
-set_dns
-set_timezone_and_time
-
-echo "=== 初始化完成！系统已优化 ==="