119 lines
4.1 KiB
Bash
119 lines
4.1 KiB
Bash
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#!/usr/bin/env bash
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# ==============================================================================
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# 脚本功能说明 (Bootstrap Script for Shorin Arch Setup - Ninja PV Edition)
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# 1. 环境防御：严格检测操作系统(仅限Linux)与系统架构(仅限x86_64)。
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# 2. 权限自适应：智能识别 root/普通用户，防止 Live CD 环境下缺少 sudo 导致崩溃。
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# 3. 依赖隐身：静默准备 curl/tar/git/pv。其中 pv 仅作临时数据流监控。
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# 4. 流式处理：通过 curl 拉取源码，pv 提供带有预估总量的真实进度条与网速监控。
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# 5. 用完即焚：解压完成后，静默卸载临时依赖 pv (若它是被本脚本安装的)，保持系统洁净。
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# 6. 一键引导：无缝切换目录并接管标准输入，提权执行核心安装脚本。
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# ==============================================================================
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# 启用严格模式：遇到错误、未定义变量或管道错误时立即退出
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set -euo pipefail
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# --- [颜色配置] ---
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# --- [环境检测与准备] ---
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# 1. 检查是否为 Linux 内核
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if [ "$(uname -s)" != "Linux" ]; then
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printf "%bError: This installer only supports Linux systems.%b\n" "$RED" "$NC"
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exit 1
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fi
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# 2. 检查架构是否匹配 (仅允许 x86_64)
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ARCH=$(uname -m)
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if [ "$ARCH" != "x86_64" ]; then
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printf "%bError: Unsupported architecture: %s%b\n" "$RED" "$ARCH" "$NC"
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printf "This installer is strictly designed for x86_64 (amd64) systems only.\n"
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exit 1
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fi
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ARCH_NAME="amd64"
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# 3. 极简提权封装 (KISS 原则：是 root 直接跑，不是 root 才加 sudo)
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run_as_root() {
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if [ "$(id -u)" -eq 0 ]; then
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"$@"
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else
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if ! command -v sudo >/dev/null 2>&1; then
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printf "%bError: 'sudo' command not found. Please run this script as root.%b\n" "$RED" "$NC"
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exit 1
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fi
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sudo "$@"
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fi
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}
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# --- [配置区域] ---
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TARGET_BRANCH="${BRANCH:-main}"
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TARBALL_URL="https://github.com/SHORiN-KiWATA/shorin-arch-setup/archive/refs/heads/${TARGET_BRANCH}.tar.gz"
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TARGET_DIR="/tmp/shorin-arch-setup"
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# 【极客魔法】预估源码压缩包体积。实际测得约为 60MB，这里预留一点余量设定为 65M，确保进度条平滑且不卡顿。
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EXPECTED_SIZE="80M"
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printf "%b>>> Preparing to install from branch: %s on %s%b\n" "$BLUE" "$TARGET_BRANCH" "$ARCH_NAME" "$NC"
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# --- [执行流程] ---
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# 1. 依赖检查与静默安装
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MISSING_PKGS=()
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INSTALLED_PV_FLAG=0
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for cmd in curl tar git pv; do
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if ! command -v "$cmd" >/dev/null 2>&1; then
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MISSING_PKGS+=("$cmd")
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if [ "$cmd" = "pv" ]; then
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INSTALLED_PV_FLAG=1
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fi
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fi
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done
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if [ ${#MISSING_PKGS[@]} -gt 0 ]; then
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run_as_root pacman -Sy --noconfirm --needed "${MISSING_PKGS[@]}" >/dev/null 2>&1
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fi
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# 2. 清理旧目录并重新创建
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if [ -d "$TARGET_DIR" ]; then
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run_as_root rm -rf "$TARGET_DIR"
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fi
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mkdir -p "$TARGET_DIR"
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# 3. 流式下载与解压 (引入基于预估体积的真实进度条)
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printf "Downloading and extracting repository to %s...\n" "$TARGET_DIR"
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for attempt in 1 2 3; do
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# 核心变动：加入了 -s "$EXPECTED_SIZE" 让 pv 以为自己知道了终点。
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# -ptrb: p=真实的进度条, t=时间, r=网速, b=字节
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if curl -sSLf "$TARBALL_URL" | pv -ptrb -s "$EXPECTED_SIZE" | tar -xz -C "$TARGET_DIR" --strip-components=1; then
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run_as_root chmod 755 "$TARGET_DIR"
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printf "%b\nDownload and extraction successful.%b\n" "$GREEN" "$NC"
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break
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fi
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if [ "$attempt" -eq 3 ]; then
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printf "%bError: Failed to download branch '%s' after 3 attempts. Network issue suspected.%b\n" "$RED" "$TARGET_BRANCH" "$NC"
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exit 1
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fi
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printf "%bWarning: Download failed (attempt %d/3). Retrying in 3 seconds...%b\n" "$RED" "$attempt" "$NC"
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sleep 3
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run_as_root rm -rf "$TARGET_DIR"
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mkdir -p "$TARGET_DIR"
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done
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# 4. 毁尸灭迹：如果 pv 是我们刚装的，悄悄卸载掉
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if [ "$INSTALLED_PV_FLAG" -eq 1 ]; then
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run_as_root pacman -Rns --noconfirm pv >/dev/null 2>&1
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fi
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# 5. 运行安装
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cd "$TARGET_DIR"
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printf "Starting installer...\n"
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run_as_root bash install.sh < /dev/tty
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