diff --git a/spug_api/apps/account/views.py b/spug_api/apps/account/views.py
index 085ed73..8f60643 100644
--- a/spug_api/apps/account/views.py
+++ b/spug_api/apps/account/views.py
@@ -2,6 +2,7 @@
 # Copyright: (c) <spug.dev@gmail.com>
 # Released under the AGPL-3.0 License.
 from django.core.cache import cache
+from django.conf import settings
 from libs.mixins import AdminView, View
 from libs import JsonParser, Argument, human_datetime, json_response
 from libs.utils import get_request_real_ip, generate_random_str
@@ -245,7 +246,7 @@ def handle_user_info(request, user, captcha):
     x_real_ip = get_request_real_ip(request.headers)
     token_isvalid = user.access_token and len(user.access_token) == 32 and user.token_expired >= time.time()
     user.access_token = user.access_token if token_isvalid else uuid.uuid4().hex
-    user.token_expired = time.time() + 8 * 60 * 60
+    user.token_expired = time.time() + settings.TOKEN_TTL
     user.last_login = human_datetime()
     user.last_ip = x_real_ip
     user.save()
diff --git a/spug_api/libs/ssh.py b/spug_api/libs/ssh.py
index f964c99..7624d72 100644
--- a/spug_api/libs/ssh.py
+++ b/spug_api/libs/ssh.py
@@ -155,11 +155,10 @@ class SSH:
         command = 'set +o history\nset +o zle\nset -o no_nomatch\nexport PS1= && stty -echo\n'
         command = self._handle_command(command, self.default_env)
         self.channel.sendall(command)
-        out = line = ''
+        out = ''
         while True:
             if self.channel.recv_ready():
-                line = self._decode(self.channel.recv(8196))
-                out += line
+                out += self._decode(self.channel.recv(8196))
                 if self.regex.search(out):
                     self.stdout = self.channel.makefile('r')
                     break
diff --git a/spug_api/spug/settings.py b/spug_api/spug/settings.py
index d1938f2..1cbfeea 100644
--- a/spug_api/spug/settings.py
+++ b/spug_api/spug/settings.py
@@ -102,6 +102,7 @@ TEMPLATES = [
     },
 ]
 
+TOKEN_TTL = 8 * 3600
 SCHEDULE_KEY = 'spug:schedule'
 SCHEDULE_WORKER_KEY = 'spug:schedule:worker'
 MONITOR_KEY = 'spug:monitor'