diff --git a/lib/client.js b/lib/client.js
index 5c921c9..36f9748 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -508,20 +508,26 @@ class ClawClient {
 
   _setHostname(clawId) {
     const hostname = `claw-${clawId}`;
-    // clawd runs as root (no User= in service), no sudo needed.
-    // Use ';' not '&&' so each command runs independently even if one fails.
-    const cmd = [
-      `hostname ${hostname}`,
-      `echo "${hostname}" > /etc/hostname`,
-      `sed -i 's/^127\\.0\\.1\\.1.*/127.0.1.1       ${hostname}/' /etc/hosts`,
-    ].join('; ');
-    exec(cmd, { shell: true }, (err) => {
-      if (err) {
-        log.warn('clawd', `hostname set failed: ${err.message}`);
-      } else {
-        log.info('clawd', `hostname -> ${hostname}`);
-      }
-    });
+
+    // 运行时 hostname（无需文件权限）
+    exec(`hostname ${hostname}`, { shell: true });
+
+    // 写 /etc/hostname（fs 直接写文件，不需要目录可写）
+    try {
+      fs.writeFileSync('/etc/hostname', hostname + '\n', 'utf8');
+    } catch (e) {
+      log.warn('clawd', `write /etc/hostname failed: ${e.message}`);
+    }
+
+    // 更新 /etc/hosts（fs 读写，绕过 sed -i 需要目录可写的限制）
+    try {
+      const content = fs.readFileSync('/etc/hosts', 'utf8');
+      const updated = content.replace(/^127\.0\.1\.1.*/m, `127.0.1.1       ${hostname}`);
+      fs.writeFileSync('/etc/hosts', updated, 'utf8');
+      log.info('clawd', `hostname -> ${hostname}`);
+    } catch (e) {
+      log.warn('clawd', `write /etc/hosts failed: ${e.message}`);
+    }
   }
 
   // ── OpenClaw 配置 ────────────────────────────────────────────────────────────
diff --git a/package.json b/package.json
index fa934c4..11a9688 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "clawd",
-  "version": "1.2.9",
+  "version": "1.3.0",
   "description": "Claw Box daemon - connects local Linux box to claw.cutos.ai via WebSocket",
   "main": "lib/client.js",
   "bin": {