feat: 新增 sys.uptime/net.iface/net.conn/net.speed/proc.tree/file.empty/user.info 命令

internal/executor/proctree.go

@@ -0,0 +1,51 @@
+package executor
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"runtime"
+)
+// runProcTree implements `kopsc proc tree`: show process tree.
+func runProcTree(ctx context.Context, req BuiltinRequest) error {
+	switch runtime.GOOS {
+	case "linux", "darwin":
+		return procTreeUnix(ctx, req)
+	case "windows":
+		return procTreeWindows(ctx, req)
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+func procTreeUnix(ctx context.Context, req BuiltinRequest) error {
+	// Try pstree first (best output)
+	if path, err := exec.LookPath("pstree"); err == nil {
+		cmd := exec.CommandContext(ctx, path, "-p")
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+
+	// Fallback: use ps with PPID and format a simple tree
+	// macOS doesn't support -H, so we use a different approach
+	if runtime.GOOS == "darwin" {
+		cmd := exec.CommandContext(ctx, "ps", "-eo", "pid,ppid,comm")
+		cmd.Stdout = req.Stdout
+		cmd.Stderr = req.Stderr
+		return cmd.Run()
+	}
+
+	// Linux fallback: ps with hierarchical output
+	cmd := exec.CommandContext(ctx, "ps", "-ejH")
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}
+
+func procTreeWindows(ctx context.Context, req BuiltinRequest) error {
+	cmd := exec.CommandContext(ctx, "tasklist", "/tree")
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}