Awesome-Embedded-Learning-Studio · Charliechen114514 · May 26, 2026 · May 26, 2026 · May 26, 2026 · May 26, 2026
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -5,6 +5,7 @@ on:
     branches: [main]
   pull_request:
     branches: [main]
+  workflow_dispatch:
 
 jobs:
   # ── Native build + test ───────────────────────────────────────
@@ -16,10 +17,19 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y cmake g++-13
+          sudo apt-get install -y cmake g++-13 ccache
+
+      - name: Restore ccache
+        uses: actions/cache@v4
+        with:
+          path: ~/.ccache
+          key: ccache-native-${{ runner.os }}-${{ github.sha }}
+          restore-keys: ccache-native-${{ runner.os }}-
 
       - name: Configure (Debug)
-        run: cmake -B build -DCMAKE_CXX_COMPILER=g++-13
+        run: cmake -B build -DCMAKE_CXX_COMPILER=g++-13 -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
+        env:
+          CCACHE_MAXSIZE: 256M
 
       - name: Build
         run: cmake --build build -j $(nproc)
@@ -46,14 +56,24 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y cmake g++-13
+          sudo apt-get install -y cmake g++-13 ccache
+
+      - name: Restore ccache
+        uses: actions/cache@v4
+        with:
+          path: ~/.ccache
+          key: ccache-release-${{ runner.os }}-${{ github.sha }}
+          restore-keys: ccache-release-${{ runner.os }}-
 
       - name: Configure (Release, -Os)
         run: >
           cmake -B build-release
           -DCMAKE_BUILD_TYPE=Release
           -DCMAKE_CXX_COMPILER=g++-13
+          -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
           -DCFBOX_OPTIMIZE_FOR_SIZE=ON
+        env:
+          CCACHE_MAXSIZE: 256M
 
       - name: Build
         run: cmake --build build-release -j $(nproc)
@@ -92,22 +112,32 @@ jobs:
         if: matrix.target == 'aarch64'
         run: |
           sudo apt-get update
-          sudo apt-get install -y cmake ${{ matrix.compiler_pkg }}
+          sudo apt-get install -y cmake ${{ matrix.compiler_pkg }} ccache
 
       - name: Install cross-compiler (armhf)
         if: matrix.target == 'armhf'
         run: |
+          sudo apt-get update
+          sudo apt-get install -y ccache
           curl -L -o /tmp/arm-toolchain.tar.xz \
             https://developer.arm.com/-/media/Files/downloads/gnu/15.2.rel1/binrel/arm-gnu-toolchain-15.2.rel1-x86_64-arm-none-linux-gnueabihf.tar.xz
           sudo tar -xJf /tmp/arm-toolchain.tar.xz -C /opt
           sudo ln -s /opt/arm-gnu-toolchain-15.2.rel1-x86_64-arm-none-linux-gnueabihf /opt/arm-gnu-toolchain
           echo "/opt/arm-gnu-toolchain-15.2.rel1-x86_64-arm-none-linux-gnueabihf/bin" >> "$GITHUB_PATH"
 
+      - name: Restore ccache
+        uses: actions/cache@v4
+        with:
+          path: ~/.ccache
+          key: ccache-cross-${{ matrix.target }}-${{ github.sha }}
+          restore-keys: ccache-cross-${{ matrix.target }}-
+
       - name: Cross-compile (dynamic, -Os)
         run: |
           cmake -B build-${{ matrix.target }} \
             -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain/${{ matrix.toolchain }} \
             -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
             -DCFBOX_OPTIMIZE_FOR_SIZE=ON
           cmake --build build-${{ matrix.target }} -j $(nproc)
 
@@ -123,6 +153,7 @@ jobs:
           cmake -B build-${{ matrix.target }}-static \
             -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain/${{ matrix.toolchain }} \
             -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
             -DCFBOX_OPTIMIZE_FOR_SIZE=ON \
             -DCFBOX_STATIC_LINK=ON
           cmake --build build-${{ matrix.target }}-static -j $(nproc)

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.26 FATAL_ERROR)
 
 project(CFBox
-    VERSION 0.0.1
+    VERSION 0.2.0
     DESCRIPTION "A Modern C++ Toy Busybox"
     HOMEPAGE_URL "https://github.com/Awesome-Embedded-Learning-Studio/CFBox"
     LANGUAGES CXX
@@ -56,6 +56,9 @@ target_include_directories(cfbox PUBLIC include)
 target_include_directories(cfbox PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include)
 target_link_libraries(cfbox PRIVATE cfbox_compiler_flags)
 
+# ── Install target ─────────────────────────────────────────────
+install(TARGETS cfbox DESTINATION bin)
+
 # ── GTest via CPM (FetchContent) ──────────────────────────────
 if(NOT CMAKE_CROSSCOMPILING)
 CPMAddPackage(

diff --git a/README.en.md b/README.en.md
@@ -8,20 +8,20 @@ A minimalist BusyBox alternative written in modern C++23.
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![C++23](https://img.shields.io/badge/C++23-00599C?logo=cplusplus)](https://en.cppreference.com/w/cpp/23)
 [![CMake](https://img.shields.io/badge/CMake-3.26+-064F8C?logo=cmake)](https://cmake.org/)
-[![Tests](https://img.shields.io/badge/Tests-331_passing-brightgreen)](tests/)
-[![Applets](https://img.shields.io/badge/Applets-109-brightgreen)](src/applets/)
+[![Tests](https://img.shields.io/badge/Tests-379_passing-brightgreen)](tests/)
+[![Applets](https://img.shields.io/badge/Applets-115-brightgreen)](src/applets/)
 
 ## Overview
 
-CFBox is a single-executable Unix utility collection distributed via symbolic links. 109 applets implemented and tested, with a CI pipeline covering native builds, cross-compilation, and QEMU user/system-mode testing. Features configurable CMake builds (per-applet toggles), GNU-style long options, and colored help output.
+CFBox is a single-executable Unix utility collection distributed via symbolic links. 115 applets implemented and tested, with a CI pipeline covering native builds, cross-compilation, and QEMU user/system-mode testing. Features configurable CMake builds (per-applet toggles), GNU-style long options, and colored help output.
 
 **Design philosophy:** Simplicity first — Modern C++ (`std::expected`) — Embedded-friendly (cross-compilation, static linking)
 
 ## Size Comparison
 
 | Project | Language | Size | Applets | Size/Applet |
 |---------|----------|------|---------|-------------|
-| **CFBox (size-opt)** | **C++23** | **446 KB** | **109** | **~4.1 KB** |
+| **CFBox (size-opt)** | **C++23** | **406 KB** | **115** | **~3.5 KB** |
 | Toybox | C | ~500 KB | 238 | ~2.1 KB |
 | BusyBox (full) | C | ~1.7 MB | 274 | ~9 KB |
 | uutils/coreutils | Rust | ~11 MB | ~100 | ~110 KB |
@@ -50,7 +50,7 @@ cmake -B build
 cmake --build build
 
 # Test
-ctest --test-dir build --output-on-failure   # 331 GTest unit tests
+ctest --test-dir build --output-on-failure   # 379 GTest unit tests
 bash tests/integration/run_all.sh            # 54 integration test scripts
 
 # Run via subcommand
@@ -61,15 +61,15 @@ bash tests/integration/run_all.sh            # 54 integration test scripts
 echo "Hello, World!"   # now calls cfbox via symlink
 ```
 
-## Supported Commands (109)
+## Supported Commands (115)
 
 ### Text Processing (31)
 
 `echo`, `printf`, `cat`, `head`, `tail`, `wc`, `sort`, `uniq`, `grep`, `sed`, `fold`, `expand`, `cut`, `paste`, `nl`, `comm`, `tr`, `tac`, `rev`, `shuf`, `factor`, `od`, `split`, `seq`, `tsort`, `expr`, `awk`, `diff`, `patch`, `cmp`, `ed`
 
-### File Operations (19)
+### File Operations (22)
 
-`mkdir`, `rm`, `cp`, `mv`, `ls`, `find`, `ln`, `touch`, `stat`, `install`, `mktemp`, `truncate`, `du`, `df`, `readlink`, `realpath`, `rmdir`, `link`, `unlink`
+`mkdir`, `rm`, `cp`, `mv`, `ls`, `find`, `ln`, `touch`, `stat`, `install`, `mktemp`, `truncate`, `du`, `df`, `readlink`, `realpath`, `rmdir`, `link`, `unlink`, `chmod`, `chown`, `chgrp`
 
 ### Archive & Compression (6)
 
@@ -87,9 +87,9 @@ echo "Hello, World!"   # now calls cfbox via symlink
 
 `ps`, `top`, `kill`, `pgrep`/`pkill`, `pidof`, `pstree`, `pmap`, `fuser`, `pwdx`, `sysctl`, `iostat`, `watch`, `nice`, `renice`, `timeout`
 
-### Other (16)
+### Other (19)
 
-`true`, `false`, `yes`, `sleep`, `usleep`, `sync`, `nohup`, `cksum`, `md5sum`, `sum`, `hexdump`, `more`, `tee`, `init` (PID 1 initramfs init system), `mkfifo`, `mknod`
+`true`, `false`, `yes`, `sleep`, `usleep`, `sync`, `nohup`, `cksum`, `md5sum`, `sum`, `hexdump`, `more`, `tee`, `init` (PID 1 initramfs init system), `mkfifo`, `mknod`, `clear`, `which`, `mountpoint`
 
 > All applets support `--help` / `--version`
 
@@ -137,33 +137,26 @@ cfbox/
 │   └── ...                          # help.hpp, fs_util.hpp, escape.hpp, checksum.hpp
 ├── src/
 │   ├── main.cpp                     # Dispatch entry
-│   └── applets/                     # 109 command implementations
+│   └── applets/                     # 115 command implementations
 ├── tests/
-│   ├── unit/                        # GTest unit tests (331 cases)
+│   ├── unit/                        # GTest unit tests (379 cases)
 │   └── integration/                 # Shell integration tests (54 scripts)
 └── scripts/                         # Build, test, install scripts
 ```
 
 ## Next Steps
 
-Current release: v0.1.0. Upcoming work, in priority order:
+Current release: v0.2.0 (Phase 1 Wave 1 + Phase 1.5 code quality review complete). Now entering Phase 2: core command deepening.
 
-### Phase 0: Production Pre-gates (In Progress)
+### Phase 2: Core Command Deepening (In Progress)
 
-Before adding new applets, the following quality foundations must be completed:
+Deepening existing commands from ~30% to ~70% feature completeness, in batches by operational frequency:
 
-| Phase | Scope | Status |
-|-------|-------|--------|
-| **0A** Baseline Inventory | 109-applet catalog, maturity labels, profile assignments, doc drift fixes | Pending |
-| **0B** Perf Baseline | Core benchmarks (cat/grep/sed/sort/find/tar/gzip/cp/tail), RSS regression thresholds | Pending |
-| **0C** Size Budget | Per-profile size caps, new rescue/container profiles, per-applet delta tracking | Pending |
-| **0D** IO Policy | Streaming audit (head/tail/sed/tr/md5sum etc.), large file/pipe/broken pipe tests | Pending |
-| **0E** Safety Hardening | Unified numeric parsers, parser fuzz smoke, privileged command isolation tests | Pending |
-| **0F** CI & Release | Tiered CI (sanitizer/benchmark/differential/cross/QEMU), reproducible builds, error format spec | Pending |
-
-### Phase 1: Core System (After Phase 0)
-
-New system-level applets: `chmod`, `chown`, `chgrp`, `mount`, `umount`, `chroot`, `dd`, `stty`, plus deepening existing core commands.
+| Batch | Commands | Key Additions |
+|-------|----------|---------------|
+| Batch 1 | `tail`, `cp`, `test`, `ls` | tail -f, cp -a, full POSIX test, ls -R/--color |
+| Batch 2 | `grep`, `tar`, `sed`, `sort` | grep -A/-B/-C, tar -z/-v, sed -i, sort -k |
+| Batch 3 | `find`, `sh`, `ps`, `df`, `du` | find boolean expressions, sh case/heredoc/functions |
 
 > See [document/todo/README.md](document/todo/README.md) for the full roadmap.
 

diff --git a/README.md b/README.md
@@ -8,20 +8,20 @@
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![C++23](https://img.shields.io/badge/C++23-00599C?logo=cplusplus)](https://en.cppreference.com/w/cpp/23)
 [![CMake](https://img.shields.io/badge/CMake-3.26+-064F8C?logo=cmake)](https://cmake.org/)
-[![Tests](https://img.shields.io/badge/Tests-331_passing-brightgreen)](tests/)
-[![Applets](https://img.shields.io/badge/Applets-109-brightgreen)](src/applets/)
+[![Tests](https://img.shields.io/badge/Tests-379_passing-brightgreen)](tests/)
+[![Applets](https://img.shields.io/badge/Applets-115-brightgreen)](src/applets/)
 
 ## 概述
 
-CFBox 是一个单一可执行文件的 Unix 工具集，通过符号链接分发。109 个 applet 已实现并通过测试，CI 流水线覆盖原生构建、交叉编译、QEMU 用户/系统模式测试。支持 CMake 配置化构建（per-applet 开关）、GNU 风格长选项、彩色帮助输出。
+CFBox 是一个单一可执行文件的 Unix 工具集，通过符号链接分发。115 个 applet 已实现并通过测试，CI 流水线覆盖原生构建、交叉编译、QEMU 用户/系统模式测试。支持 CMake 配置化构建（per-applet 开关）、GNU 风格长选项、彩色帮助输出。
 
 **设计理念：** 简洁优先 — 现代C++（`std::expected`） — 嵌入式友好（交叉编译、静态链接）
 
 ## 体积对比
 
 | 项目 | 语言 | 体积 | Applets | 体积/Applet |
 |------|------|------|---------|-------------|
-| **CFBox (size-opt)** | **C++23** | **446 KB** | **109** | **~4.1 KB** |
+| **CFBox (size-opt)** | **C++23** | **406 KB** | **115** | **~3.5 KB** |
 | Toybox | C | ~500 KB | 238 | ~2.1 KB |
 | BusyBox (full) | C | ~1.7 MB | 274 | ~9 KB |
 | uutils/coreutils | Rust | ~11 MB | ~100 | ~110 KB |
@@ -50,7 +50,7 @@ cmake -B build
 cmake --build build
 
 # 测试
-ctest --test-dir build --output-on-failure   # 331 个 GTest 单元测试
+ctest --test-dir build --output-on-failure   # 379 个 GTest 单元测试
 bash tests/integration/run_all.sh            # 54 套集成测试脚本
 
 # 通过子命令运行
@@ -61,15 +61,15 @@ bash tests/integration/run_all.sh            # 54 套集成测试脚本
 echo "Hello, World!"   # 通过符号链接调用 cfbox
 ```
 
-## 支持的命令（109 个）
+## 支持的命令（115 个）
 
 ### 文本处理（31 个）
 
 `echo`, `printf`, `cat`, `head`, `tail`, `wc`, `sort`, `uniq`, `grep`, `sed`, `fold`, `expand`, `cut`, `paste`, `nl`, `comm`, `tr`, `tac`, `rev`, `shuf`, `factor`, `od`, `split`, `seq`, `tsort`, `expr`, `awk`, `diff`, `patch`, `cmp`, `ed`
 
-### 文件操作（19 个）
+### 文件操作（22 个）
 
-`mkdir`, `rm`, `cp`, `mv`, `ls`, `find`, `ln`, `touch`, `stat`, `install`, `mktemp`, `truncate`, `du`, `df`, `readlink`, `realpath`, `rmdir`, `link`, `unlink`
+`mkdir`, `rm`, `cp`, `mv`, `ls`, `find`, `ln`, `touch`, `stat`, `install`, `mktemp`, `truncate`, `du`, `df`, `readlink`, `realpath`, `rmdir`, `link`, `unlink`, `chmod`, `chown`, `chgrp`
 
 ### 归档与压缩（6 个）
 
@@ -87,9 +87,9 @@ echo "Hello, World!"   # 通过符号链接调用 cfbox
 
 `ps`, `top`, `kill`, `pgrep`/`pkill`, `pidof`, `pstree`, `pmap`, `fuser`, `pwdx`, `sysctl`, `iostat`, `watch`, `nice`, `renice`, `timeout`
 
-### 其他（16 个）
+### 其他（19 个）
 
-`true`, `false`, `yes`, `sleep`, `usleep`, `sync`, `nohup`, `cksum`, `md5sum`, `sum`, `hexdump`, `more`, `tee`, `init`（PID 1 initramfs init 系统）, `mkfifo`, `mknod`
+`true`, `false`, `yes`, `sleep`, `usleep`, `sync`, `nohup`, `cksum`, `md5sum`, `sum`, `hexdump`, `more`, `tee`, `init`（PID 1 initramfs init 系统）, `mkfifo`, `mknod`, `clear`, `which`, `mountpoint`
 
 > 所有 applet 均支持 `--help` / `--version`
 
@@ -137,33 +137,26 @@ cfbox/
 │   └── ...                          # help.hpp, fs_util.hpp, escape.hpp, checksum.hpp
 ├── src/
 │   ├── main.cpp                     # 分发入口
-│   └── applets/                     # 109 个命令实现
+│   └── applets/                     # 115 个命令实现
 ├── tests/
-│   ├── unit/                        # GTest 单元测试（331 个用例）
+│   ├── unit/                        # GTest 单元测试（379 个用例）
 │   └── integration/                 # Shell 集成测试（54 个脚本）
 └── scripts/                         # 构建、测试、安装脚本
 ```
 
 ## 下一步计划
 
-当前版本 v0.1.0，下一阶段工作按优先级排列：
+当前版本 v0.2.0（Phase 1 Wave 1 + Phase 1.5 代码质量审查已完成），进入 Phase 2 核心命令深化：
 
-### Phase 0：生产化前置门禁（进行中）
+### Phase 2：核心命令深化（进行中）
 
-在新增 applet 之前，必须完成以下质量地基：
+将现有命令功能深度从 ~30% 提升到 ~70%，按运维频率分批推进：
 
-| 阶段 | 内容 | 状态 |
-|------|------|------|
-| **0A** 基线盘点 | 109 个 applet 清单、成熟度标注、profile 归属、文档漂移修复 | 待开始 |
-| **0B** 性能基线 | 核心命令 benchmark（cat/grep/sed/sort/find/tar/gzip/cp/tail）、RSS 回归阈值 | 待开始 |
-| **0C** 体积预算 | 按 profile 设定体积上限、新增 rescue/container profile、每 applet 增量追踪 | 待开始 |
-| **0D** IO 策略 | 流式处理审计（head/tail/sed/tr/md5sum 等整改为流式）、大文件/管道/broken pipe 测试 | 待开始 |
-| **0E** 安全加固 | 数值解析统一 helper、parser fuzz smoke、特权命令隔离测试 | 待开始 |
-| **0F** CI 与发布 | 分层 CI（sanitizer/benchmark/differential/cross/QEMU）、可复现构建、错误格式规范 | 待开始 |
-
-### Phase 1：核心系统（Phase 0 完成后）
-
-新增 `chmod`、`chown`、`chgrp`、`mount`、`umount`、`chroot`、`dd`、`stty` 等系统级 applet，深化核心命令功能。
+| 批次 | 命令 | 关键补充 |
+|------|------|---------|
+| 第一批 | `tail`、`cp`、`test`、`ls` | tail -f、cp -a、全面 POSIX test、ls -R/--color |
+| 第二批 | `grep`、`tar`、`sed`、`sort` | grep -A/-B/-C、tar -z/-v、sed -i、sort -k |
+| 第三批 | `find`、`sh`、`ps`、`df`、`du` | find 布尔表达式、sh case/heredoc/函数 |
 
 > 详细路线图见 [document/todo/README.md](document/todo/README.md)。