feat: 新增 file/svc/archive/sys/log/fw 分组并扩充 net、proc

- file：findbig 按大小、findrecent 按修改时间、findname 按名称查找文件
- svc：systemctl / launchctl / sc 统一接口，status、enable、disable、logs
- archive：按扩展名自动识别格式并解压，支持 tar.gz/tgz/tar.bz2/tar.xz/tar/zip/gz
- sysinfo：OS、CPU、内存、磁盘一览
- log：journalctl / log show / wevtutil 搜索关键字与查看最近日志
- fw：ufw / firewalld / iptables / ALF / netsh 统一接口，status、allow、deny
- net 新增 ping、trace（mtr 优先）、dns（dig 优先）、curl HTTP 诊断
- proc 新增 topmem、topcpu、killname
- 危险操作（svc enable/disable、proc killname、fw allow/deny）需 --yes 确认
- 注册表、executor 派发表、cli 分组说明与 README 同步更新

internal/executor/archiveextract.go

@@ -0,0 +1,272 @@
+package executor
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"compress/gzip"
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+// runArchiveExtract implements `kopsc archive extract <file>`: auto-detect
+// archive format and extract to current directory (or --dir).
+func runArchiveExtract(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseArchiveExtractArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	src := opts.file
+	if _, err := os.Stat(src); err != nil {
+		return fmt.Errorf("文件 %q 不存在: %w", src, err)
+	}
+
+	dest := opts.dest
+	if dest == "" {
+		dest = "."
+	}
+	if err := os.MkdirAll(dest, 0o755); err != nil {
+		return fmt.Errorf("创建目标目录 %q 失败: %w", dest, err)
+	}
+
+	lower := strings.ToLower(src)
+	switch {
+	case strings.HasSuffix(lower, ".tar.gz") || strings.HasSuffix(lower, ".tgz"):
+		return extractTarGz(src, dest, req)
+	case strings.HasSuffix(lower, ".tar.bz2") || strings.HasSuffix(lower, ".tbz2"):
+		return extractTarViaPipe(ctx, "bzip2", "-dc", src, dest, req)
+	case strings.HasSuffix(lower, ".tar.xz") || strings.HasSuffix(lower, ".txz"):
+		return extractTarViaPipe(ctx, "xz", "-dc", src, dest, req)
+	case strings.HasSuffix(lower, ".tar"):
+		return extractTarFile(src, dest, req)
+	case strings.HasSuffix(lower, ".zip") || strings.HasSuffix(lower, ".jar") || strings.HasSuffix(lower, ".war"):
+		return extractZip(src, dest, req)
+	case strings.HasSuffix(lower, ".gz"):
+		return extractGz(src, dest, req)
+	default:
+		return fmt.Errorf("无法识别的压缩格式: %q（支持 .tar.gz .tgz .tar.bz2 .tar.xz .tar .zip .gz）", src)
+	}
+}
+
+type archiveExtractOptions struct {
+	file string
+	dest string
+}
+
+func parseArchiveExtractArgs(args []string) (archiveExtractOptions, error) {
+	var opts archiveExtractOptions
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case arg == "--dir" || arg == "-d" || arg == "-C":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少目标目录", arg)
+			}
+			i++
+			opts.dest = args[i]
+		case strings.HasPrefix(arg, "--dir="):
+			opts.dest = strings.TrimPrefix(arg, "--dir=")
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+	if len(positional) == 0 {
+		return opts, fmt.Errorf("缺少压缩文件路径；用法: kopsc archive extract <文件>")
+	}
+	opts.file = positional[0]
+	return opts, nil
+}
+
+func extractTarGz(src, dest string, req BuiltinRequest) error {
+	f, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	gz, err := gzip.NewReader(f)
+	if err != nil {
+		return fmt.Errorf("打开 gzip 失败: %w", err)
+	}
+	defer gz.Close()
+	fmt.Fprintf(req.Stdout, "解压 tar.gz: %s -> %s\n", src, dest)
+	return writeTar(tar.NewReader(gz), dest, req)
+}
+
+func extractTarFile(src, dest string, req BuiltinRequest) error {
+	f, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	fmt.Fprintf(req.Stdout, "解压 tar: %s -> %s\n", src, dest)
+	return writeTar(tar.NewReader(f), dest, req)
+}
+
+func extractTarViaPipe(ctx context.Context, decompressor, flag, src, dest string, req BuiltinRequest) error {
+	if _, err := exec.LookPath(decompressor); err != nil {
+		return fmt.Errorf("解压 %s 需要 %s，请先安装", filepath.Ext(src), decompressor)
+	}
+	fmt.Fprintf(req.Stdout, "解压 %s: %s -> %s\n", decompressor, src, dest)
+	cmd := exec.CommandContext(ctx, decompressor, flag, src)
+	stdoutPipe, err := cmd.StdoutPipe()
+	if err != nil {
+		return err
+	}
+	cmd.Stderr = req.Stderr
+	if err := cmd.Start(); err != nil {
+		return fmt.Errorf("启动 %s 失败: %w", decompressor, err)
+	}
+	err = writeTar(tar.NewReader(stdoutPipe), dest, req)
+	if waitErr := cmd.Wait(); waitErr != nil && err == nil {
+		err = waitErr
+	}
+	return err
+}
+
+func writeTar(tr *tar.Reader, dest string, req BuiltinRequest) error {
+	count := 0
+	for {
+		header, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return fmt.Errorf("读取 tar 失败: %w", err)
+		}
+		target := filepath.Join(dest, header.Name)
+		if !isWithinDir(target, dest) {
+			return fmt.Errorf("tar 条目 %q 试图逃逸出目标目录", header.Name)
+		}
+		switch header.Typeflag {
+		case tar.TypeDir:
+			if err := os.MkdirAll(target, os.FileMode(header.Mode)); err != nil {
+				return err
+			}
+		case tar.TypeReg:
+			if dir := filepath.Dir(target); dir != "" {
+				if err := os.MkdirAll(dir, 0o755); err != nil {
+					return err
+				}
+			}
+			f, err := os.OpenFile(target, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.FileMode(header.Mode))
+			if err != nil {
+				return err
+			}
+			if _, err := io.Copy(f, tr); err != nil {
+				f.Close()
+				return err
+			}
+			f.Close()
+			count++
+		case tar.TypeSymlink:
+			if dir := filepath.Dir(target); dir != "" {
+				if err := os.MkdirAll(dir, 0o755); err != nil {
+					return err
+				}
+			}
+			os.Remove(target)
+			if err := os.Symlink(header.Linkname, target); err != nil {
+				return err
+			}
+		}
+	}
+	fmt.Fprintf(req.Stdout, "已解压 %d 个文件\n", count)
+	return nil
+}
+
+func extractZip(src, dest string, req BuiltinRequest) error {
+	fmt.Fprintf(req.Stdout, "解压 zip: %s -> %s\n", src, dest)
+	r, err := zip.OpenReader(src)
+	if err != nil {
+		return fmt.Errorf("打开 zip 失败: %w", err)
+	}
+	defer r.Close()
+
+	count := 0
+	for _, f := range r.File {
+		target := filepath.Join(dest, f.Name)
+		if !isWithinDir(target, dest) {
+			return fmt.Errorf("zip 条目 %q 试图逃逸出目标目录", f.Name)
+		}
+		if f.FileInfo().IsDir() {
+			if err := os.MkdirAll(target, 0o755); err != nil {
+				return err
+			}
+			continue
+		}
+		if dir := filepath.Dir(target); dir != "" {
+			if err := os.MkdirAll(dir, 0o755); err != nil {
+				return err
+			}
+		}
+		rc, err := f.Open()
+		if err != nil {
+			return err
+		}
+		out, err := os.OpenFile(target, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, f.Mode())
+		if err != nil {
+			rc.Close()
+			return err
+		}
+		_, err = io.Copy(out, rc)
+		rc.Close()
+		out.Close()
+		if err != nil {
+			return err
+		}
+		count++
+	}
+	fmt.Fprintf(req.Stdout, "已解压 %d 个文件\n", count)
+	return nil
+}
+
+func extractGz(src, dest string, req BuiltinRequest) error {
+	fmt.Fprintf(req.Stdout, "解压 gz: %s -> %s\n", src, dest)
+	f, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	gz, err := gzip.NewReader(f)
+	if err != nil {
+		return fmt.Errorf("打开 gzip 失败: %w", err)
+	}
+	defer gz.Close()
+
+	outName := strings.TrimSuffix(filepath.Base(src), ".gz")
+	if outName == "" {
+		outName = "output"
+	}
+	target := filepath.Join(dest, outName)
+	out, err := os.Create(target)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+	if _, err := io.Copy(out, gz); err != nil {
+		return err
+	}
+	fmt.Fprintf(req.Stdout, "已解压: %s\n", target)
+	return nil
+}
+
+// isWithinDir checks that target is inside dest (prevents zip-slip attacks).
+func isWithinDir(target, dest string) bool {
+	rel, err := filepath.Rel(dest, target)
+	if err != nil {
+		return false
+	}
+	return !strings.HasPrefix(rel, ".."+string(filepath.Separator)) && rel != ".."
+}

internal/executor/builtin.go

@@ -32,6 +32,7 @@ type BuiltinRequest struct {
 type Builtin func(ctx context.Context, req BuiltinRequest) error
 
 var builtins = map[string]Builtin{
+	"archive.extract":    runArchiveExtract,
 	"disk.usage":         runDiskUsage,
 	"diagnose":           runDiagnose,
 	"docker.df":          runDockerDF,
@@ -46,14 +47,34 @@ var builtins = map[string]Builtin{
 	"docker.save":        runDockerSave,
 	"docker.stats":       runDockerStats,
 	"docker.stop":        runDockerStop,
+	"file.findbig":       runFileFindBig,
+	"file.findname":      runFileFindName,
+	"file.findrecent":    runFileFindRecent,
+	"fw.allow":           runFwAllow,
+	"fw.deny":            runFwDeny,
+	"fw.status":          runFwStatus,
 	"git.retime":         runGitRetime,
 	"git.retime.preview": runGitRetimePreview,
 	"java.run":           runJavaRun,
 	"java.run.preview":   runJavaPreview,
+	"log.last":           runLogLast,
+	"log.search":         runLogSearch,
+	"net.curl":           runNetCurl,
+	"net.dns":            runNetDNS,
+	"net.ping":           runNetPing,
 	"net.pids":           runNetPIDs,
 	"net.ports":          runNetPorts,
+	"net.trace":          runNetTrace,
+	"proc.killname":      runProcKillName,
 	"proc.nohup":         runNohup,
+	"proc.topcpu":        runProcTopCPU,
+	"proc.topmem":        runProcTopMem,
 	"proc.wait":          runProcWait,
+	"svc.disable":        runSvcDisable,
+	"svc.enable":         runSvcEnable,
+	"svc.logs":           runSvcLogs,
+	"svc.status":         runSvcStatus,
+	"sysinfo":            runSysInfo,
 	"user.grant":         runUserGrant,
 	"user.revoke":        runUserRevoke,
 }

internal/executor/filefind.go

@@ -0,0 +1,388 @@
+package executor
+
+import (
+	"context"
+	"fmt"
+	"io/fs"
+	"path/filepath"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// runFileFindBig implements `kopsc file findbig`: find files larger than a
+// threshold, sorted by size descending.
+func runFileFindBig(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseFileFindBigArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	root, err := filepath.Abs(opts.path)
+	if err != nil {
+		return fmt.Errorf("无法解析路径 %q: %w", opts.path, err)
+	}
+
+	type fileEntry struct {
+		path string
+		size int64
+	}
+	var results []fileEntry
+
+	err = filepath.WalkDir(root, func(path string, d fs.DirEntry, walkErr error) error {
+		if walkErr != nil {
+			return nil
+		}
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+		if d.IsDir() {
+			return nil
+		}
+		info, err := d.Info()
+		if err != nil || !info.Mode().IsRegular() {
+			return nil
+		}
+		if info.Size() >= opts.threshold {
+			rel, _ := filepath.Rel(root, path)
+			if rel == "" {
+				rel = path
+			}
+			results = append(results, fileEntry{path: rel, size: info.Size()})
+		}
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	sort.Slice(results, func(i, j int) bool {
+		return results[i].size > results[j].size
+	})
+
+	if len(results) == 0 {
+		fmt.Fprintf(req.Stdout, "没有找到大于 %s 的文件\n", humanSize(opts.threshold))
+		return nil
+	}
+
+	for _, f := range results {
+		fmt.Fprintf(req.Stdout, "%-8s %s\n", humanSize(f.size), f.path)
+	}
+	fmt.Fprintf(req.Stdout, "\n共 %d 个文件大于 %s\n", len(results), humanSize(opts.threshold))
+	return nil
+}
+
+type fileFindBigOptions struct {
+	path      string
+	threshold int64
+}
+
+func parseFileFindBigArgs(args []string) (fileFindBigOptions, error) {
+	opts := fileFindBigOptions{path: ".", threshold: 100 * 1024 * 1024}
+	var paths []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			paths = append(paths, args[i+1:]...)
+			i = len(args)
+		case arg == "--threshold" || arg == "-s":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少大小参数，例如 --threshold 50M", arg)
+			}
+			i++
+			n, err := parseSizeArg(args[i])
+			if err != nil {
+				return opts, fmt.Errorf("%s: %w", arg, err)
+			}
+			opts.threshold = n
+		case strings.HasPrefix(arg, "--threshold="):
+			n, err := parseSizeArg(strings.TrimPrefix(arg, "--threshold="))
+			if err != nil {
+				return opts, fmt.Errorf("--threshold: %w", err)
+			}
+			opts.threshold = n
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			paths = append(paths, arg)
+		}
+	}
+	if len(paths) > 1 {
+		return opts, fmt.Errorf("一次只支持一个路径，收到 %d 个", len(paths))
+	}
+	if len(paths) == 1 {
+		opts.path = paths[0]
+	}
+	return opts, nil
+}
+
+// parseSizeArg parses human-friendly size strings: "100M", "1G", "500K", "1024".
+func parseSizeArg(s string) (int64, error) {
+	s = strings.TrimSpace(s)
+	if s == "" {
+		return 0, fmt.Errorf("缺少大小值")
+	}
+	multiplier := int64(1)
+	upper := strings.ToUpper(s)
+	if strings.HasSuffix(upper, "TB") || strings.HasSuffix(upper, "T") {
+		multiplier = 1024 * 1024 * 1024 * 1024
+	} else if strings.HasSuffix(upper, "GB") || strings.HasSuffix(upper, "G") {
+		multiplier = 1024 * 1024 * 1024
+	} else if strings.HasSuffix(upper, "MB") || strings.HasSuffix(upper, "M") {
+		multiplier = 1024 * 1024
+	} else if strings.HasSuffix(upper, "KB") || strings.HasSuffix(upper, "K") {
+		multiplier = 1024
+	} else if strings.HasSuffix(upper, "B") {
+		multiplier = 1
+	}
+
+	numStr := s
+	if multiplier > 1 {
+		numStr = s[:len(s)-lenSuffix(s)]
+	}
+	numStr = strings.TrimSpace(numStr)
+
+	n, err := strconv.ParseFloat(numStr, 64)
+	if err != nil {
+		return 0, fmt.Errorf("无法解析大小 %q", s)
+	}
+	return int64(n * float64(multiplier)), nil
+}
+
+func lenSuffix(s string) int {
+	i := len(s)
+	for i > 0 && !isDigit(s[i-1]) && s[i-1] != '.' {
+		i--
+	}
+	return len(s) - i
+}
+
+func isDigit(b byte) bool {
+	return b >= '0' && b <= '9'
+}
+
+// runFileFindRecent implements `kopsc file findrecent`: find files modified
+// within the last N days.
+func runFileFindRecent(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseFileFindRecentArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	root, err := filepath.Abs(opts.path)
+	if err != nil {
+		return fmt.Errorf("无法解析路径 %q: %w", opts.path, err)
+	}
+
+	cutoff := time.Now().AddDate(0, 0, -opts.days)
+	type fileEntry struct {
+		path    string
+		modTime time.Time
+	}
+	var results []fileEntry
+
+	err = filepath.WalkDir(root, func(path string, d fs.DirEntry, walkErr error) error {
+		if walkErr != nil {
+			return nil
+		}
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+		if d.IsDir() {
+			return nil
+		}
+		info, err := d.Info()
+		if err != nil || !info.Mode().IsRegular() {
+			return nil
+		}
+		if info.ModTime().After(cutoff) {
+			rel, _ := filepath.Rel(root, path)
+			if rel == "" {
+				rel = path
+			}
+			results = append(results, fileEntry{path: rel, modTime: info.ModTime()})
+		}
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	sort.Slice(results, func(i, j int) bool {
+		return results[i].modTime.After(results[j].modTime)
+	})
+
+	if len(results) == 0 {
+		fmt.Fprintf(req.Stdout, "最近 %d 天内没有修改过的文件\n", opts.days)
+		return nil
+	}
+
+	for _, f := range results {
+		fmt.Fprintf(req.Stdout, "%s  %s\n", f.modTime.Format("2006-01-02 15:04"), f.path)
+	}
+	fmt.Fprintf(req.Stdout, "\n共 %d 个文件在最近 %d 天内修改\n", len(results), opts.days)
+	return nil
+}
+
+type fileFindRecentOptions struct {
+	path string
+	days int
+}
+
+func parseFileFindRecentArgs(args []string) (fileFindRecentOptions, error) {
+	opts := fileFindRecentOptions{path: ".", days: 7}
+	var paths []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			paths = append(paths, args[i+1:]...)
+			i = len(args)
+		case arg == "--days" || arg == "-d":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少天数", arg)
+			}
+			i++
+			n, err := strconv.Atoi(args[i])
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--days 需要正整数，收到 %q", args[i])
+			}
+			opts.days = n
+		case strings.HasPrefix(arg, "--days="):
+			n, err := strconv.Atoi(strings.TrimPrefix(arg, "--days="))
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--days 需要正整数，收到 %q", strings.TrimPrefix(arg, "--days="))
+			}
+			opts.days = n
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			paths = append(paths, arg)
+		}
+	}
+	if len(paths) > 1 {
+		return opts, fmt.Errorf("一次只支持一个路径，收到 %d 个", len(paths))
+	}
+	if len(paths) == 1 {
+		opts.path = paths[0]
+	}
+	return opts, nil
+}
+
+// runFileFindName implements `kopsc file findname`: find files by name pattern
+// (case-insensitive glob match).
+func runFileFindName(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseFileFindNameArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	root, err := filepath.Abs(opts.path)
+	if err != nil {
+		return fmt.Errorf("无法解析路径 %q: %w", opts.path, err)
+	}
+
+	var results []string
+	err = filepath.WalkDir(root, func(path string, d fs.DirEntry, walkErr error) error {
+		if walkErr != nil {
+			return nil
+		}
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+		if d.IsDir() {
+			return nil
+		}
+		name := d.Name()
+		if matchGlob(opts.pattern, name) {
+			rel, _ := filepath.Rel(root, path)
+			if rel == "" {
+				rel = path
+			}
+			results = append(results, rel)
+		}
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	sort.Strings(results)
+
+	if len(results) == 0 {
+		fmt.Fprintf(req.Stdout, "没有找到匹配 %q 的文件\n", opts.pattern)
+		return nil
+	}
+
+	for _, f := range results {
+		fmt.Fprintln(req.Stdout, f)
+	}
+	fmt.Fprintf(req.Stdout, "\n共 %d 个文件匹配\n", len(results))
+	return nil
+}
+
+type fileFindNameOptions struct {
+	path    string
+	pattern string
+}
+
+func parseFileFindNameArgs(args []string) (fileFindNameOptions, error) {
+	opts := fileFindNameOptions{path: "."}
+	var paths []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			remaining := args[i+1:]
+			if len(remaining) > 0 && opts.pattern == "" {
+				opts.pattern = remaining[0]
+				paths = append(paths, remaining[1:]...)
+			} else {
+				paths = append(paths, remaining...)
+			}
+			i = len(args)
+		case arg == "--pattern" || arg == "-p":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少模式参数", arg)
+			}
+			i++
+			opts.pattern = args[i]
+		case strings.HasPrefix(arg, "--pattern="):
+			opts.pattern = strings.TrimPrefix(arg, "--pattern=")
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			if opts.pattern == "" {
+				opts.pattern = arg
+			} else {
+				paths = append(paths, arg)
+			}
+		}
+	}
+	if opts.pattern == "" {
+		return opts, fmt.Errorf("必须提供文件名模式，例如 kopsc file findname \"*.log\"")
+	}
+	if len(paths) > 1 {
+		return opts, fmt.Errorf("一次只支持一个路径，收到 %d 个", len(paths))
+	}
+	if len(paths) == 1 {
+		opts.path = paths[0]
+	}
+	return opts, nil
+}
+
+// matchGlob does a case-insensitive filepath.Match.
+func matchGlob(pattern, name string) bool {
+	if ok, _ := filepath.Match(strings.ToLower(pattern), strings.ToLower(name)); ok {
+		return true
+	}
+	if ok, _ := filepath.Match(pattern, name); ok {
+		return true
+	}
+	return false
+}

internal/executor/firewall.go

@@ -0,0 +1,239 @@
+package executor
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"runtime"
+	"strings"
+)
+
+// runFwStatus implements `kopsc fw status`: show current firewall rules.
+func runFwStatus(ctx context.Context, req BuiltinRequest) error {
+	switch runtime.GOOS {
+	case "linux":
+		return fwStatusLinux(ctx, req)
+	case "darwin":
+		return fwStatusDarwin(ctx, req)
+	case "windows":
+		return fwStatusWindows(ctx, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+func fwStatusLinux(ctx context.Context, req BuiltinRequest) error {
+	// Try ufw first, then firewalld, then iptables.
+	if path, err := exec.LookPath("ufw"); err == nil {
+		cmd := exec.CommandContext(ctx, path, "status", "verbose")
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+	if path, err := exec.LookPath("firewall-cmd"); err == nil {
+		fmt.Fprintln(req.Stdout, "=== firewalld 状态 ===")
+		cmd := exec.CommandContext(ctx, path, "--state")
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		_ = cmd.Run()
+
+		fmt.Fprintln(req.Stdout, "\n=== 已开放端口 ===")
+		listCmd := exec.CommandContext(ctx, path, "--list-ports")
+		listCmd.Stdout = req.Stdout
+		listCmd.Stderr = req.Stderr
+		_ = listCmd.Run()
+
+		fmt.Fprintln(req.Stdout, "\n=== 已允许服务 ===")
+		svcCmd := exec.CommandContext(ctx, path, "--list-services")
+		svcCmd.Stdout = req.Stdout
+		svcCmd.Stderr = req.Stderr
+		return svcCmd.Run()
+	}
+	if path, err := exec.LookPath("iptables"); err == nil {
+		cmd := exec.CommandContext(ctx, path, "-L", "-n", "--line-numbers")
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+	return fmt.Errorf("未找到 ufw、firewall-cmd 或 iptables")
+}
+
+func fwStatusDarwin(ctx context.Context, req BuiltinRequest) error {
+	fmt.Fprintln(req.Stdout, "macOS 使用内置应用防火墙（ALF）")
+	cmd := exec.CommandContext(ctx, "/usr/libexec/ApplicationFirewall/socketfilterfw", "--getglobalstate")
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	_ = cmd.Run()
+
+	fmt.Fprintln(req.Stdout, "\n=== 已允许的应用 ===")
+	listCmd := exec.CommandContext(ctx, "/usr/libexec/ApplicationFirewall/socketfilterfw", "--listapps")
+	listCmd.Stdout = req.Stdout
+	listCmd.Stderr = req.Stderr
+	return listCmd.Run()
+}
+
+func fwStatusWindows(ctx context.Context, req BuiltinRequest) error {
+	cmd := exec.CommandContext(ctx, "netsh", "advfirewall", "firewall", "show", "rule", "name=all", "dir=in", "status=enabled")
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+// runFwAllow implements `kopsc fw allow <port>/<protocol>`: open a port.
+func runFwAllow(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseFwPortArgs(req.Args, "allow")
+	if err != nil {
+		return err
+	}
+
+	switch runtime.GOOS {
+	case "linux":
+		return fwAllowLinux(ctx, opts, req)
+	case "darwin":
+		return fmt.Errorf("macOS 不支持通过命令行开放端口，请在系统偏好设置中配置")
+	case "windows":
+		return fwAllowWindows(ctx, opts, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+func fwAllowLinux(ctx context.Context, opts fwPortOptions, req BuiltinRequest) error {
+	portProto := fmt.Sprintf("%d/%s", opts.port, opts.protocol)
+	if path, err := exec.LookPath("ufw"); err == nil {
+		fmt.Fprintf(req.Stdout, "开放端口: %s (ufw)\n", portProto)
+		return runCommand(ctx, path, []string{"allow", portProto}, req)
+	}
+	if path, err := exec.LookPath("firewall-cmd"); err == nil {
+		fmt.Fprintf(req.Stdout, "开放端口: %s (firewalld)\n", portProto)
+		if err := runCommand(ctx, path, []string{"--add-port=" + portProto, "--permanent"}, req); err != nil {
+			return err
+		}
+		return runCommand(ctx, path, []string{"--reload"}, req)
+	}
+	return fmt.Errorf("未找到 ufw 或 firewall-cmd")
+}
+
+func fwAllowWindows(ctx context.Context, opts fwPortOptions, req BuiltinRequest) error {
+	name := fmt.Sprintf("kopsc-allow-%d-%s", opts.port, opts.protocol)
+	fmt.Fprintf(req.Stdout, "开放端口: %d/%s (Windows Firewall)\n", opts.port, opts.protocol)
+	return runCommand(ctx, "netsh", []string{
+		"advfirewall", "firewall", "add", "rule",
+		"name=" + name, "dir=in", "action=allow",
+		"protocol=" + opts.protocol, "localport=" + fmt.Sprintf("%d", opts.port),
+	}, req)
+}
+
+// runFwDeny implements `kopsc fw deny <port>/<protocol>`: close a port.
+func runFwDeny(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseFwPortArgs(req.Args, "deny")
+	if err != nil {
+		return err
+	}
+
+	switch runtime.GOOS {
+	case "linux":
+		return fwDenyLinux(ctx, opts, req)
+	case "darwin":
+		return fmt.Errorf("macOS 不支持通过命令行关闭端口，请在系统偏好设置中配置")
+	case "windows":
+		return fwDenyWindows(ctx, opts, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+func fwDenyLinux(ctx context.Context, opts fwPortOptions, req BuiltinRequest) error {
+	portProto := fmt.Sprintf("%d/%s", opts.port, opts.protocol)
+	if path, err := exec.LookPath("ufw"); err == nil {
+		fmt.Fprintf(req.Stdout, "关闭端口: %s (ufw)\n", portProto)
+		return runCommand(ctx, path, []string{"deny", portProto}, req)
+	}
+	if path, err := exec.LookPath("firewall-cmd"); err == nil {
+		fmt.Fprintf(req.Stdout, "关闭端口: %s (firewalld)\n", portProto)
+		if err := runCommand(ctx, path, []string{"--remove-port=" + portProto, "--permanent"}, req); err != nil {
+			return err
+		}
+		return runCommand(ctx, path, []string{"--reload"}, req)
+	}
+	return fmt.Errorf("未找到 ufw 或 firewall-cmd")
+}
+
+func fwDenyWindows(ctx context.Context, opts fwPortOptions, req BuiltinRequest) error {
+	name := fmt.Sprintf("kopsc-allow-%d-%s", opts.port, opts.protocol)
+	fmt.Fprintf(req.Stdout, "关闭端口: %d/%s (Windows Firewall)\n", opts.port, opts.protocol)
+	return runCommand(ctx, "netsh", []string{
+		"advfirewall", "firewall", "delete", "rule",
+		"name=" + name,
+	}, req)
+}
+
+type fwPortOptions struct {
+	port     int
+	protocol string
+}
+
+func parseFwPortArgs(args []string, action string) (fwPortOptions, error) {
+	opts := fwPortOptions{protocol: "tcp"}
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case arg == "-p" || arg == "--protocol":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少协议", arg)
+			}
+			i++
+			proto := strings.ToLower(args[i])
+			if proto != "tcp" && proto != "udp" {
+				return opts, fmt.Errorf("协议必须是 tcp 或 udp，收到 %q", args[i])
+			}
+			opts.protocol = proto
+		case strings.HasPrefix(arg, "--protocol="):
+			proto := strings.ToLower(strings.TrimPrefix(arg, "--protocol="))
+			if proto != "tcp" && proto != "udp" {
+				return opts, fmt.Errorf("协议必须是 tcp 或 udp，收到 %q", strings.TrimPrefix(arg, "--protocol="))
+			}
+			opts.protocol = proto
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+	if len(positional) == 0 {
+		return opts, fmt.Errorf("缺少端口号；用法: kopsc fw %s <端口>[/<协议>]", action)
+	}
+
+	portStr := positional[0]
+	if idx := strings.Index(portStr, "/"); idx >= 0 {
+		proto := strings.ToLower(portStr[idx+1:])
+		if proto != "tcp" && proto != "udp" {
+			return opts, fmt.Errorf("协议必须是 tcp 或 udp，收到 %q", proto)
+		}
+		opts.protocol = proto
+		portStr = portStr[:idx]
+	}
+
+	n, err := parseInt(portStr)
+	if err != nil || n < 1 || n > 65535 {
+		return opts, fmt.Errorf("端口必须是 1-65535 的整数，收到 %q", positional[0])
+	}
+	opts.port = n
+	return opts, nil
+}
+
+func parseInt(s string) (int, error) {
+	n := 0
+	for _, c := range s {
+		if c < '0' || c > '9' {
+			return 0, fmt.Errorf("不是整数: %q", s)
+		}
+		n = n*10 + int(c-'0')
+	}
+	return n, nil
+}

internal/executor/logsearch.go

@@ -0,0 +1,269 @@
+package executor
+
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// runLogSearch implements `kopsc log search <keyword>`: search system logs.
+func runLogSearch(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseLogSearchArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	switch runtime.GOOS {
+	case "linux":
+		return logSearchLinux(ctx, opts, req)
+	case "darwin":
+		return logSearchDarwin(ctx, opts, req)
+	case "windows":
+		return logSearchWindows(ctx, opts, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+type logSearchOptions struct {
+	keyword string
+	since   string
+	unit    string
+	lines   int
+}
+
+func parseLogSearchArgs(args []string) (logSearchOptions, error) {
+	opts := logSearchOptions{lines: 100}
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case arg == "--since":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("--since 缺少时长，例如 --since 1h")
+			}
+			i++
+			opts.since = args[i]
+		case strings.HasPrefix(arg, "--since="):
+			opts.since = strings.TrimPrefix(arg, "--since=")
+		case arg == "-u" || arg == "--unit":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少服务名", arg)
+			}
+			i++
+			opts.unit = args[i]
+		case strings.HasPrefix(arg, "--unit="):
+			opts.unit = strings.TrimPrefix(arg, "--unit=")
+		case arg == "-n" || arg == "--lines":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少行数", arg)
+			}
+			i++
+			n, err := strconv.Atoi(args[i])
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--lines 需要正整数，收到 %q", args[i])
+			}
+			opts.lines = n
+		case strings.HasPrefix(arg, "--lines="):
+			n, err := strconv.Atoi(strings.TrimPrefix(arg, "--lines="))
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--lines 需要正整数")
+			}
+			opts.lines = n
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+	if len(positional) == 0 {
+		return opts, fmt.Errorf("缺少搜索关键字；用法: kopsc log search <关键字>")
+	}
+	opts.keyword = positional[0]
+	return opts, nil
+}
+
+func logSearchLinux(ctx context.Context, opts logSearchOptions, req BuiltinRequest) error {
+	args := []string{"--no-pager", "-n", strconv.Itoa(opts.lines), "--grep=" + opts.keyword}
+	if opts.since != "" {
+		since, err := normalizeSince(opts.since)
+		if err != nil {
+			return fmt.Errorf("--since: %w", err)
+		}
+		args = append(args, "--since="+since)
+	}
+	if opts.unit != "" {
+		args = append(args, "-u", opts.unit)
+	}
+	cmd := exec.CommandContext(ctx, "journalctl", args...)
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+func logSearchDarwin(ctx context.Context, opts logSearchOptions, req BuiltinRequest) error {
+	predicate := fmt.Sprintf(`eventMessage CONTAINS[c] "%s"`, opts.keyword)
+	if opts.unit != "" {
+		predicate = fmt.Sprintf(`(subsystem == "%s" OR process == "%s") AND %s`, opts.unit, opts.unit, predicate)
+	}
+	since := "1h"
+	if opts.since != "" {
+		since = opts.since
+	}
+	cmd := exec.CommandContext(ctx, "log", "show", "--predicate", predicate, "--last", since, "--style", "compact")
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+func logSearchWindows(ctx context.Context, opts logSearchOptions, req BuiltinRequest) error {
+	args := []string{"qe", "System", "/q:*[System[Provider]]", "/c:" + strconv.Itoa(opts.lines), "/rd:true", "/f:text"}
+	cmd := exec.CommandContext(ctx, "wevtutil", args...)
+	var stdout strings.Builder
+	cmd.Stdout = &stdout
+	cmd.Stderr = req.Stderr
+	if err := cmd.Run(); err != nil {
+		return err
+	}
+	scanner := bufio.NewScanner(strings.NewReader(stdout.String()))
+	count := 0
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.Contains(strings.ToLower(line), strings.ToLower(opts.keyword)) {
+			fmt.Fprintln(req.Stdout, line)
+			count++
+		}
+	}
+	if count == 0 {
+		fmt.Fprintf(req.Stdout, "没有找到包含 %q 的日志\n", opts.keyword)
+	}
+	return nil
+}
+
+// normalizeSince converts shorthand like "1h", "30m" to journalctl --since format.
+func normalizeSince(s string) (string, error) {
+	s = strings.TrimSpace(s)
+	if s == "" {
+		return "", fmt.Errorf("时长不能为空")
+	}
+	if d, err := time.ParseDuration(s); err == nil {
+		t := time.Now().Add(-d)
+		return t.Format("2006-01-02 15:04:05"), nil
+	}
+	return s, nil
+}
+
+// runLogLast implements `kopsc log last`: show recent system log entries.
+func runLogLast(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseLogLastArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	switch runtime.GOOS {
+	case "linux":
+		return logLastLinux(ctx, opts, req)
+	case "darwin":
+		return logLastDarwin(ctx, opts, req)
+	case "windows":
+		return logLastWindows(ctx, opts, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+type logLastOptions struct {
+	lines int
+	unit  string
+}
+
+func parseLogLastArgs(args []string) (logLastOptions, error) {
+	opts := logLastOptions{lines: 50}
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			remaining := args[i+1:]
+			if len(remaining) > 0 {
+				n, err := strconv.Atoi(remaining[0])
+				if err != nil || n < 1 {
+					return opts, fmt.Errorf("行数需要正整数，收到 %q", remaining[0])
+				}
+				opts.lines = n
+			}
+			i = len(args)
+		case arg == "-n" || arg == "--lines":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少行数", arg)
+			}
+			i++
+			n, err := strconv.Atoi(args[i])
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--lines 需要正整数，收到 %q", args[i])
+			}
+			opts.lines = n
+		case strings.HasPrefix(arg, "--lines="):
+			n, err := strconv.Atoi(strings.TrimPrefix(arg, "--lines="))
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--lines 需要正整数")
+			}
+			opts.lines = n
+		case arg == "-u" || arg == "--unit":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少服务名", arg)
+			}
+			i++
+			opts.unit = args[i]
+		case strings.HasPrefix(arg, "--unit="):
+			opts.unit = strings.TrimPrefix(arg, "--unit=")
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			n, err := strconv.Atoi(arg)
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("行数需要正整数，收到 %q", arg)
+			}
+			opts.lines = n
+		}
+	}
+	return opts, nil
+}
+
+func logLastLinux(ctx context.Context, opts logLastOptions, req BuiltinRequest) error {
+	args := []string{"--no-pager", "-n", strconv.Itoa(opts.lines)}
+	if opts.unit != "" {
+		args = append(args, "-u", opts.unit)
+	}
+	cmd := exec.CommandContext(ctx, "journalctl", args...)
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+func logLastDarwin(ctx context.Context, opts logLastOptions, req BuiltinRequest) error {
+	predicate := `eventMessage != ""`
+	if opts.unit != "" {
+		predicate = fmt.Sprintf(`subsystem == "%s" OR process == "%s"`, opts.unit, opts.unit)
+	}
+	cmd := exec.CommandContext(ctx, "log", "show", "--predicate", predicate, "--last", "5m", "--style", "compact")
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+func logLastWindows(ctx context.Context, opts logLastOptions, req BuiltinRequest) error {
+	cmd := exec.CommandContext(ctx, "wevtutil", "qe", "System",
+		"/c:"+strconv.Itoa(opts.lines), "/rd:true", "/f:text")
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}

internal/executor/netdiag.go

@@ -0,0 +1,289 @@
+package executor
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+// runNetPing implements `kopsc net ping <host>`: connectivity check.
+func runNetPing(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseNetPingArgs(req.Args)
+	if err != nil {
+		return err
+	}
+	args := []string{}
+	if opts.count > 0 {
+		if runtime.GOOS == "windows" {
+			args = append(args, "-n", strconv.Itoa(opts.count))
+		} else {
+			args = append(args, "-c", strconv.Itoa(opts.count))
+		}
+	}
+	if opts.interval > 0 {
+		if runtime.GOOS != "windows" {
+			args = append(args, "-i", strconv.Itoa(opts.interval))
+		}
+	}
+	args = append(args, opts.host)
+
+	cmd := exec.CommandContext(ctx, "ping", args...)
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+type netPingOptions struct {
+	host     string
+	count    int
+	interval int
+}
+
+func parseNetPingArgs(args []string) (netPingOptions, error) {
+	opts := netPingOptions{count: 4}
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case arg == "-c" || arg == "-n" || arg == "--count":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少次数", arg)
+			}
+			i++
+			n, err := strconv.Atoi(args[i])
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("次数需要正整数，收到 %q", args[i])
+			}
+			opts.count = n
+		case arg == "-i" || arg == "--interval":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少间隔秒数", arg)
+			}
+			i++
+			n, err := strconv.Atoi(args[i])
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("间隔需要正整数，收到 %q", args[i])
+			}
+			opts.interval = n
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+	if len(positional) == 0 {
+		return opts, fmt.Errorf("缺少目标主机；用法: kopsc net ping <主机>")
+	}
+	opts.host = positional[0]
+	return opts, nil
+}
+
+// runNetTrace implements `kopsc net trace <host>`: route tracing.
+func runNetTrace(ctx context.Context, req BuiltinRequest) error {
+	if len(req.Args) == 0 {
+		return fmt.Errorf("缺少目标主机；用法: kopsc net trace <主机>")
+	}
+	host := req.Args[0]
+
+	// Try mtr first (best output), then traceroute, then tracert on Windows.
+	if path, err := exec.LookPath("mtr"); err == nil {
+		cmd := exec.CommandContext(ctx, path, "--report", "--report-wide", host)
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+	if runtime.GOOS == "windows" {
+		cmd := exec.CommandContext(ctx, "tracert", host)
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+	if path, err := exec.LookPath("traceroute"); err == nil {
+		cmd := exec.CommandContext(ctx, path, host)
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+	return fmt.Errorf("未找到 traceroute 或 mtr，请安装其中之一")
+}
+
+// runNetDNS implements `kopsc net dns <host>`: DNS lookup.
+func runNetDNS(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseNetDNSArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	// Try dig first, then nslookup, then host.
+	if path, err := exec.LookPath("dig"); err == nil {
+		args := []string{opts.host}
+		if opts.recordType != "" {
+			args = []string{opts.host, opts.recordType}
+		}
+		if opts.server != "" {
+			args = append(args, "@"+opts.server)
+		}
+		args = append(args, "+noall", "+answer")
+		cmd := exec.CommandContext(ctx, path, args...)
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+	if path, err := exec.LookPath("nslookup"); err == nil {
+		args := []string{opts.host}
+		if opts.server != "" {
+			args = []string{opts.host, opts.server}
+		}
+		cmd := exec.CommandContext(ctx, path, args...)
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+	if path, err := exec.LookPath("host"); err == nil {
+		args := []string{opts.host}
+		if opts.server != "" {
+			args = append(args, opts.server)
+		}
+		cmd := exec.CommandContext(ctx, path, args...)
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+	return fmt.Errorf("未找到 dig、nslookup 或 host，请安装其中之一")
+}
+
+type netDNSOptions struct {
+	host       string
+	recordType string
+	server     string
+}
+
+func parseNetDNSArgs(args []string) (netDNSOptions, error) {
+	var opts netDNSOptions
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case arg == "-t" || arg == "--type":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少记录类型", arg)
+			}
+			i++
+			opts.recordType = strings.ToUpper(args[i])
+		case strings.HasPrefix(arg, "--type="):
+			opts.recordType = strings.ToUpper(strings.TrimPrefix(arg, "--type="))
+		case arg == "-s" || arg == "--server":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少 DNS 服务器", arg)
+			}
+			i++
+			opts.server = args[i]
+		case strings.HasPrefix(arg, "--server="):
+			opts.server = strings.TrimPrefix(arg, "--server=")
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+	if len(positional) == 0 {
+		return opts, fmt.Errorf("缺少域名；用法: kopsc net dns <域名>")
+	}
+	opts.host = positional[0]
+	return opts, nil
+}
+
+// runNetCurl implements `kopsc net curl <url>`: HTTP diagnostics showing
+// status code, time breakdown, and redirect chain.
+func runNetCurl(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseNetCurlArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	if _, err := exec.LookPath("curl"); err != nil {
+		return fmt.Errorf("net curl 需要 curl，请先安装")
+	}
+
+	args := []string{"-sS", "-o", "/dev/null", "-w",
+		"HTTP 状态码:  %{http_code}\n" +
+			"重定向次数:  %{num_redirects}\n" +
+			"DNS 解析:   %{time_namelookup}s\n" +
+			"TCP 连接:   %{time_connect}s\n" +
+			"TLS 握手:   %{time_appconnect}s\n" +
+			"首字节:     %{time_starttransfer}s\n" +
+			"总耗时:     %{time_total}s\n" +
+			"下载大小:   %{size_download} bytes\n" +
+			"下载速度:   %{speed_download} bytes/s\n",
+	}
+	if opts.follow {
+		args = append(args, "-L")
+	}
+	if opts.method != "" {
+		args = append(args, "-X", opts.method)
+	}
+	for _, h := range opts.headers {
+		args = append(args, "-H", h)
+	}
+	args = append(args, opts.url)
+
+	cmd := exec.CommandContext(ctx, "curl", args...)
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+type netCurlOptions struct {
+	url     string
+	follow  bool
+	method  string
+	headers []string
+}
+
+func parseNetCurlArgs(args []string) (netCurlOptions, error) {
+	var opts netCurlOptions
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case arg == "-L" || arg == "--follow":
+			opts.follow = true
+		case arg == "-X" || arg == "--method":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少 HTTP 方法", arg)
+			}
+			i++
+			opts.method = strings.ToUpper(args[i])
+		case arg == "-H" || arg == "--header":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少 header 值", arg)
+			}
+			i++
+			opts.headers = append(opts.headers, args[i])
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+	if len(positional) == 0 {
+		return opts, fmt.Errorf("缺少 URL；用法: kopsc net curl <URL>")
+	}
+	opts.url = positional[0]
+	return opts, nil
+}

internal/executor/proctop.go

@@ -0,0 +1,303 @@
+package executor
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"runtime"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// runProcTopMem implements `kopsc proc topmem`: show top N processes by memory.
+func runProcTopMem(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseProcTopArgs(req.Args)
+	if err != nil {
+		return err
+	}
+	procs, err := listProcessesWithMem(ctx)
+	if err != nil {
+		return err
+	}
+	sort.Slice(procs, func(i, j int) bool { return procs[i].mem > procs[j].mem })
+	printProcTop(req, procs, opts.count, "内存")
+	return nil
+}
+
+// runProcTopCPU implements `kopsc proc topcpu`: show top N processes by CPU.
+func runProcTopCPU(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseProcTopArgs(req.Args)
+	if err != nil {
+		return err
+	}
+	procs, err := listProcessesWithCPU(ctx)
+	if err != nil {
+		return err
+	}
+	sort.Slice(procs, func(i, j int) bool { return procs[i].cpu > procs[j].cpu })
+	printProcTop(req, procs, opts.count, "CPU")
+	return nil
+}
+
+type procTopOptions struct {
+	count int
+}
+
+func parseProcTopArgs(args []string) (procTopOptions, error) {
+	opts := procTopOptions{count: 10}
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			remaining := args[i+1:]
+			if len(remaining) > 0 {
+				n, err := strconv.Atoi(remaining[0])
+				if err != nil || n < 1 {
+					return opts, fmt.Errorf("数量需要正整数，收到 %q", remaining[0])
+				}
+				opts.count = n
+			}
+			i = len(args)
+		case arg == "-n" || arg == "--count":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少数量", arg)
+			}
+			i++
+			n, err := strconv.Atoi(args[i])
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--count 需要正整数，收到 %q", args[i])
+			}
+			opts.count = n
+		case strings.HasPrefix(arg, "--count="):
+			n, err := strconv.Atoi(strings.TrimPrefix(arg, "--count="))
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--count 需要正整数")
+			}
+			opts.count = n
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			n, err := strconv.Atoi(arg)
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("数量需要正整数，收到 %q", arg)
+			}
+			opts.count = n
+		}
+	}
+	return opts, nil
+}
+
+type procEntry struct {
+	PID     int
+	Name    string
+	Command string
+	mem     float64
+	cpu     float64
+}
+
+func listProcessesWithMem(ctx context.Context) ([]procEntry, error) {
+	if runtime.GOOS == "linux" || runtime.GOOS == "darwin" {
+		return listProcMemPS(ctx)
+	}
+	return listProcMemTasklist(ctx)
+}
+
+func listProcessesWithCPU(ctx context.Context) ([]procEntry, error) {
+	if runtime.GOOS == "linux" || runtime.GOOS == "darwin" {
+		return listProcCPUPS(ctx)
+	}
+	return listProcCPUTasklist(ctx)
+}
+
+func listProcMemPS(ctx context.Context) ([]procEntry, error) {
+	out, err := exec.CommandContext(ctx, "ps", "-eo", "pid=,rss=,comm=,args=").Output()
+	if err != nil {
+		return nil, fmt.Errorf("ps 执行失败: %w", err)
+	}
+	var procs []procEntry
+	for _, line := range strings.Split(string(out), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		fields := strings.Fields(line)
+		if len(fields) < 3 {
+			continue
+		}
+		pid, _ := strconv.Atoi(fields[0])
+		rss, _ := strconv.ParseFloat(fields[1], 64)
+		name := fields[2]
+		command := strings.Join(fields[3:], " ")
+		if pid > 0 {
+			procs = append(procs, procEntry{PID: pid, Name: name, Command: command, mem: rss})
+		}
+	}
+	return procs, nil
+}
+
+func listProcCPUPS(ctx context.Context) ([]procEntry, error) {
+	out, err := exec.CommandContext(ctx, "ps", "-eo", "pid=,%cpu=,comm=,args=").Output()
+	if err != nil {
+		return nil, fmt.Errorf("ps 执行失败: %w", err)
+	}
+	var procs []procEntry
+	for _, line := range strings.Split(string(out), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		fields := strings.Fields(line)
+		if len(fields) < 3 {
+			continue
+		}
+		pid, _ := strconv.Atoi(fields[0])
+		cpu, _ := strconv.ParseFloat(fields[1], 64)
+		name := fields[2]
+		command := strings.Join(fields[3:], " ")
+		if pid > 0 {
+			procs = append(procs, procEntry{PID: pid, Name: name, Command: command, cpu: cpu})
+		}
+	}
+	return procs, nil
+}
+
+func listProcMemTasklist(ctx context.Context) ([]procEntry, error) {
+	out, err := exec.CommandContext(ctx, "tasklist", "/fo", "csv", "/nh").Output()
+	if err != nil {
+		return nil, fmt.Errorf("tasklist 执行失败: %w", err)
+	}
+	var procs []procEntry
+	for _, line := range strings.Split(string(out), "\n") {
+		fields := strings.Split(strings.TrimSpace(line), ",")
+		if len(fields) < 5 {
+			continue
+		}
+		name := strings.Trim(fields[0], `"`)
+		pid, _ := strconv.Atoi(strings.Trim(fields[1], `"`))
+		memStr := strings.Trim(fields[4], ` "K`)
+		memStr = strings.ReplaceAll(memStr, ",", "")
+		mem, _ := strconv.ParseFloat(memStr, 64)
+		if pid > 0 {
+			procs = append(procs, procEntry{PID: pid, Name: name, mem: mem})
+		}
+	}
+	return procs, nil
+}
+
+func listProcCPUTasklist(ctx context.Context) ([]procEntry, error) {
+	return nil, fmt.Errorf("Windows 下 tasklist 不报告 CPU 使用率，请使用任务管理器")
+}
+
+func printProcTop(req BuiltinRequest, procs []procEntry, count int, label string) {
+	if len(procs) == 0 {
+		fmt.Fprintln(req.Stdout, "没有获取到进程信息")
+		return
+	}
+	if count > len(procs) {
+		count = len(procs)
+	}
+	w := req.Stdout
+	fmt.Fprintf(w, "=== 占用 %s 前 %d 的进程 ===\n\n", label, count)
+	fmt.Fprintf(w, "%-8s %-8s %-20s %s\n", "PID", label, "进程", "命令")
+	for i := 0; i < count; i++ {
+		p := procs[i]
+		memStr := ""
+		if label == "内存" {
+			memStr = humanSize(int64(p.mem * 1024))
+		} else {
+			memStr = fmt.Sprintf("%.1f%%", p.cpu)
+		}
+		cmd := p.Command
+		if len(cmd) > 50 {
+			cmd = cmd[:50] + "..."
+		}
+		fmt.Fprintf(w, "%-8d %-8s %-20s %s\n", p.PID, memStr, p.Name, cmd)
+	}
+}
+
+// runProcKillName implements `kopsc proc killname <name>`: kill processes by name.
+func runProcKillName(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseProcKillNameArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	procs, err := listProcesses(ctx)
+	if err != nil {
+		return err
+	}
+
+	var targets []processInfo
+	for _, p := range procs {
+		if strings.EqualFold(p.Name, opts.name) || strings.Contains(strings.ToLower(p.Command), strings.ToLower(opts.name)) {
+			targets = append(targets, p)
+		}
+	}
+
+	if len(targets) == 0 {
+		fmt.Fprintf(req.Stdout, "没有找到名为 %q 的进程\n", opts.name)
+		return nil
+	}
+
+	fmt.Fprintf(req.Stdout, "找到 %d 个匹配进程:\n", len(targets))
+	for _, p := range targets {
+		fmt.Fprintf(req.Stdout, "  %d  %s  %s\n", p.PID, p.Name, p.Command)
+	}
+
+	if !opts.confirmed {
+		fmt.Fprintf(req.Stdout, "\n这是破坏性操作，未执行。加 --yes 确认终止以上进程\n")
+		return &ExitError{Code: 2}
+	}
+
+	for _, p := range targets {
+		if err := killPID(p.PID); err != nil {
+			fmt.Fprintf(req.Stderr, "终止 PID %d 失败: %v\n", p.PID, err)
+		} else {
+			fmt.Fprintf(req.Stdout, "已终止 PID %d (%s)\n", p.PID, p.Name)
+		}
+	}
+	return nil
+}
+
+type procKillNameOptions struct {
+	name      string
+	confirmed bool
+}
+
+func parseProcKillNameArgs(args []string) (procKillNameOptions, error) {
+	var opts procKillNameOptions
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case arg == "-y" || arg == "--yes":
+			opts.confirmed = true
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+	if len(positional) == 0 {
+		return opts, fmt.Errorf("缺少进程名；用法: kopsc proc killname <进程名>")
+	}
+	opts.name = positional[0]
+	return opts, nil
+}
+
+func killPID(pid int) error {
+	if runtime.GOOS == "windows" {
+		return exec.Command("taskkill", "/PID", strconv.Itoa(pid), "/F").Run()
+	}
+	proc, err := os.FindProcess(pid)
+	if err != nil {
+		return err
+	}
+	return proc.Kill()
+}

internal/executor/svc.go

@@ -0,0 +1,240 @@
+package executor
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+// runSvcStatus implements `kopsc svc status <service>`: show service status
+// and recent log lines in one step.
+func runSvcStatus(ctx context.Context, req BuiltinRequest) error {
+	if len(req.Args) == 0 {
+		return fmt.Errorf("缺少服务名；用法: kopsc svc status <服务名>")
+	}
+	name := req.Args[0]
+
+	switch runtime.GOOS {
+	case "linux":
+		return svcStatusLinux(ctx, name, req)
+	case "darwin":
+		return svcStatusDarwin(ctx, name, req)
+	case "windows":
+		return svcStatusWindows(ctx, name, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+func svcStatusLinux(ctx context.Context, name string, req BuiltinRequest) error {
+	w := req.Stdout
+	fmt.Fprintf(w, "=== 服务状态: %s ===\n\n", name)
+
+	cmd := exec.CommandContext(ctx, "systemctl", "status", name, "--no-pager")
+	cmd.Stdout = w
+	cmd.Stderr = req.Stderr
+	_ = cmd.Run()
+
+	fmt.Fprintf(w, "\n=== 最近日志 ===\n\n")
+	logCmd := exec.CommandContext(ctx, "journalctl", "-u", name, "-n", "20", "--no-pager")
+	logCmd.Stdout = w
+	logCmd.Stderr = req.Stderr
+	_ = logCmd.Run()
+	return nil
+}
+
+func svcStatusDarwin(ctx context.Context, name string, req BuiltinRequest) error {
+	w := req.Stdout
+	fmt.Fprintf(w, "=== 服务状态: %s ===\n\n", name)
+
+	cmd := exec.CommandContext(ctx, "launchctl", "list", name)
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+	_ = cmd.Run()
+
+	if stdout.Len() > 0 {
+		fmt.Fprintln(w, stdout.String())
+	} else {
+		fmt.Fprintf(w, "服务 %q 未在 launchctl 中注册\n", name)
+	}
+	if stderr.Len() > 0 {
+		fmt.Fprintln(req.Stderr, stderr.String())
+	}
+
+	fmt.Fprintf(w, "\n=== 日志（最近 20 行）===\n\n")
+	logCmd := exec.CommandContext(ctx, "log", "show", "--predicate",
+		fmt.Sprintf(`subsystem == "%s" OR process == "%s"`, name, name),
+		"--last", "5m", "--style", "compact")
+	logCmd.Stdout = w
+	logCmd.Stderr = req.Stderr
+	_ = logCmd.Run()
+	return nil
+}
+
+func svcStatusWindows(ctx context.Context, name string, req BuiltinRequest) error {
+	w := req.Stdout
+	fmt.Fprintf(w, "=== 服务状态: %s ===\n\n", name)
+
+	cmd := exec.CommandContext(ctx, "sc", "query", name)
+	cmd.Stdout = w
+	cmd.Stderr = req.Stderr
+	_ = cmd.Run()
+	return nil
+}
+
+// runSvcEnable implements `kopsc svc enable <service>`: enable + start service.
+func runSvcEnable(ctx context.Context, req BuiltinRequest) error {
+	if len(req.Args) == 0 {
+		return fmt.Errorf("缺少服务名；用法: kopsc svc enable <服务名>")
+	}
+	name := req.Args[0]
+
+	switch runtime.GOOS {
+	case "linux":
+		fmt.Fprintf(req.Stdout, "启用并启动服务: %s\n", name)
+		if err := runCommand(ctx, "systemctl", []string{"enable", name}, req); err != nil {
+			return fmt.Errorf("启用服务失败: %w", err)
+		}
+		return runCommand(ctx, "systemctl", []string{"start", name}, req)
+	case "darwin":
+		fmt.Fprintf(req.Stdout, "加载并启动服务: %s\n", name)
+		return runCommand(ctx, "launchctl", []string{"load", "-w", "/Library/LaunchDaemons/" + name + ".plist"}, req)
+	case "windows":
+		fmt.Fprintf(req.Stdout, "设置自启并启动服务: %s\n", name)
+		if err := runCommand(ctx, "sc", []string{"config", name, "start=auto"}, req); err != nil {
+			return err
+		}
+		return runCommand(ctx, "sc", []string{"start", name}, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+// runSvcDisable implements `kopsc svc disable <service>`: disable + stop service.
+func runSvcDisable(ctx context.Context, req BuiltinRequest) error {
+	if len(req.Args) == 0 {
+		return fmt.Errorf("缺少服务名；用法: kopsc svc disable <服务名>")
+	}
+	name := req.Args[0]
+
+	switch runtime.GOOS {
+	case "linux":
+		fmt.Fprintf(req.Stdout, "停止并禁用服务: %s\n", name)
+		if err := runCommand(ctx, "systemctl", []string{"stop", name}, req); err != nil {
+			return fmt.Errorf("停止服务失败: %w", err)
+		}
+		return runCommand(ctx, "systemctl", []string{"disable", name}, req)
+	case "darwin":
+		fmt.Fprintf(req.Stdout, "卸载服务: %s\n", name)
+		return runCommand(ctx, "launchctl", []string{"unload", "-w", "/Library/LaunchDaemons/" + name + ".plist"}, req)
+	case "windows":
+		fmt.Fprintf(req.Stdout, "停止并禁用服务: %s\n", name)
+		if err := runCommand(ctx, "sc", []string{"stop", name}, req); err != nil {
+			return err
+		}
+		return runCommand(ctx, "sc", []string{"config", name, "start=disabled"}, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+// runSvcLogs implements `kopsc svc logs <service>`: follow service logs.
+func runSvcLogs(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseSvcLogsArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	switch runtime.GOOS {
+	case "linux":
+		return svcLogsLinux(ctx, opts, req)
+	case "darwin":
+		return svcLogsDarwin(ctx, opts, req)
+	case "windows":
+		return svcLogsWindows(ctx, opts, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+type svcLogsOptions struct {
+	service string
+	follow  bool
+	lines   int
+}
+
+func parseSvcLogsArgs(args []string) (svcLogsOptions, error) {
+	opts := svcLogsOptions{lines: 50}
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case arg == "-f" || arg == "--follow":
+			opts.follow = true
+		case arg == "--lines" || arg == "-n":
+			if i+1 >= len(args) {
+				return opts, fmt.Errorf("%s 缺少行数", arg)
+			}
+			i++
+			n, err := strconv.Atoi(args[i])
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--lines 需要正整数，收到 %q", args[i])
+			}
+			opts.lines = n
+		case strings.HasPrefix(arg, "--lines="):
+			n, err := strconv.Atoi(strings.TrimPrefix(arg, "--lines="))
+			if err != nil || n < 1 {
+				return opts, fmt.Errorf("--lines 需要正整数")
+			}
+			opts.lines = n
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+	if len(positional) == 0 {
+		return opts, fmt.Errorf("缺少服务名；用法: kopsc svc logs <服务名>")
+	}
+	opts.service = positional[0]
+	return opts, nil
+}
+
+func svcLogsLinux(ctx context.Context, opts svcLogsOptions, req BuiltinRequest) error {
+	args := []string{"-u", opts.service, "--no-pager", "-n", strconv.Itoa(opts.lines)}
+	if opts.follow {
+		args = append(args, "-f")
+	}
+	cmd := exec.CommandContext(ctx, "journalctl", args...)
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	cmd.Stdin = req.Stdin
+	return cmd.Run()
+}
+
+func svcLogsDarwin(ctx context.Context, opts svcLogsOptions, req BuiltinRequest) error {
+	predicate := fmt.Sprintf(`subsystem == "%s" OR process == "%s"`, opts.service, opts.service)
+	args := []string{"show", "--predicate", predicate, "--style", "compact", "--last", "5m"}
+	cmd := exec.CommandContext(ctx, "log", args...)
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+func svcLogsWindows(ctx context.Context, opts svcLogsOptions, req BuiltinRequest) error {
+	cmd := exec.CommandContext(ctx, "wevtutil", "qe", "System",
+		"/q:*[System[Provider[@Name='"+opts.service+"']]]",
+		"/c:"+strconv.Itoa(opts.lines), "/rd:true", "/f:text")
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}

internal/executor/sysinfo.go

@@ -0,0 +1,160 @@
+package executor
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+
+	"gitea.odboy.cn/odboy/kenaito-kopsc/internal/platform"
+)
+
+// runSysInfo implements `kopsc sysinfo`: show OS, CPU, memory, disk overview.
+func runSysInfo(ctx context.Context, req BuiltinRequest) error {
+	w := req.Stdout
+	res := platform.DetectResources()
+
+	fmt.Fprintf(w, "=== 系统信息 ===\n\n")
+
+	fmt.Fprintf(w, "操作系统:  %s/%s\n", runtime.GOOS, runtime.GOARCH)
+	if runtime.GOOS == "linux" {
+		if data, err := os.ReadFile("/etc/os-release"); err == nil {
+			distro, _ := platform.ParseOSRelease(data)
+			if distro != "" {
+				fmt.Fprintf(w, "发行版:    %s\n", distro)
+			}
+		}
+		if hostname, err := os.Hostname(); err == nil {
+			fmt.Fprintf(w, "主机名:    %s\n", hostname)
+		}
+		if data, err := os.ReadFile("/proc/version"); err == nil {
+			fields := strings.Fields(string(data))
+			if len(fields) >= 3 {
+				fmt.Fprintf(w, "内核:      %s\n", fields[2])
+			}
+		}
+	}
+
+	fmt.Fprintf(w, "\n=== CPU ===\n\n")
+	fmt.Fprintf(w, "逻辑核心:  %d\n", res.CPUs)
+	if runtime.GOOS == "linux" {
+		if model := cpuModelLinux(); model != "" {
+			fmt.Fprintf(w, "型号:      %s\n", model)
+		}
+	} else if runtime.GOOS == "darwin" {
+		if model := cpuModelDarwin(ctx); model != "" {
+			fmt.Fprintf(w, "型号:      %s\n", model)
+		}
+	}
+
+	fmt.Fprintf(w, "\n=== 内存 ===\n\n")
+	if res.Memory > 0 {
+		fmt.Fprintf(w, "总计:      %s\n", humanSize(res.Memory))
+		fmt.Fprintf(w, "检测方式:  %s\n", res.Detected)
+	}
+	if runtime.GOOS == "linux" {
+		if free := memFreeLinux(); free > 0 {
+			fmt.Fprintf(w, "可用:      %s\n", humanSize(free))
+		}
+	}
+
+	fmt.Fprintf(w, "\n=== 磁盘 ===\n\n")
+	printDiskInfo(ctx, w)
+
+	return nil
+}
+
+func cpuModelLinux() string {
+	data, err := os.ReadFile("/proc/cpuinfo")
+	if err != nil {
+		return ""
+	}
+	for _, line := range strings.Split(string(data), "\n") {
+		if strings.HasPrefix(line, "model name") {
+			_, value, ok := strings.Cut(line, ":")
+			if ok {
+				return strings.TrimSpace(value)
+			}
+		}
+	}
+	return ""
+}
+
+func cpuModelDarwin(ctx context.Context) string {
+	out, err := exec.CommandContext(ctx, "sysctl", "-n", "machdep.cpu.brand_string").Output()
+	if err != nil {
+		return ""
+	}
+	return strings.TrimSpace(string(out))
+}
+
+func memFreeLinux() int64 {
+	data, err := os.ReadFile("/proc/meminfo")
+	if err != nil {
+		return 0
+	}
+	for _, line := range strings.Split(string(data), "\n") {
+		fields := strings.Fields(line)
+		if len(fields) < 2 {
+			continue
+		}
+		if fields[0] == "MemAvailable:" || fields[0] == "MemFree:" {
+			n, err := strconv.ParseInt(fields[1], 10, 64)
+			if err != nil {
+				return 0
+			}
+			return n * 1024
+		}
+	}
+	return 0
+}
+
+func printDiskInfo(ctx context.Context, w interface{ Write([]byte) (int, error) }) {
+	if runtime.GOOS == "windows" {
+		cmd := exec.CommandContext(ctx, "wmic", "logicaldisk", "get", "size,freespace,caption", "/format:list")
+		out, err := cmd.Output()
+		if err != nil {
+			fmt.Fprintln(w, "无法获取磁盘信息")
+			return
+		}
+		parseWMICDisk(string(out), w)
+		return
+	}
+
+	cmd := exec.CommandContext(ctx, "df", "-h")
+	out, err := cmd.Output()
+	if err != nil {
+		fmt.Fprintln(w, "无法获取磁盘信息")
+		return
+	}
+	lines := strings.Split(strings.TrimSpace(string(out)), "\n")
+	if len(lines) == 0 {
+		return
+	}
+	for _, line := range lines {
+		fmt.Fprintln(w, line)
+	}
+}
+
+func parseWMICDisk(out string, w interface{ Write([]byte) (int, error) }) {
+	var caption, freeStr, sizeStr string
+	for _, line := range strings.Split(out, "\n") {
+		line = strings.TrimSpace(line)
+		if strings.HasPrefix(line, "Caption=") {
+			caption = strings.TrimPrefix(line, "Caption=")
+		} else if strings.HasPrefix(line, "FreeSpace=") {
+			freeStr = strings.TrimPrefix(line, "FreeSpace=")
+		} else if strings.HasPrefix(line, "Size=") {
+			sizeStr = strings.TrimPrefix(line, "Size=")
+			if caption != "" && sizeStr != "" {
+				size, _ := strconv.ParseInt(sizeStr, 10, 64)
+				free, _ := strconv.ParseInt(freeStr, 10, 64)
+				fmt.Fprintf(w, "%-6s 总计 %-10s 可用 %-10s\n", caption, humanSize(size), humanSize(free))
+				caption, freeStr, sizeStr = "", "", ""
+			}
+		}
+	}
+}