diff --git a/README.md b/README.md
index 3e3f207ff..e4c2f5ae3 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,10 @@
 #欢迎使用Jumpserver
 **Jumpserver** 是一款由python编写开源的跳板机(堡垒机)系统，实现了跳板机应有的功能。基于ssh协议来管理，客户端无需安装agent。
 支持常见系统:
- 1. redhat centos
- 2. debian
- 3. suse ubuntu
- 4. freebsd
+ 1. CentOS, RedHat, Fedora, Amazon Linux
+ 2. Debian
+ 3. SUSE, Ubuntu
+ 4. FreeBSD
  5. 其他ssh协议硬件设备
 
 ###截图：
diff --git a/connect.py b/connect.py
index bb4924ddd..c23c33356 100755
--- a/connect.py
+++ b/connect.py
@@ -436,8 +436,11 @@ class Nav(object):
     """
     def __init__(self, user):
         self.user = user
-        self.search_result = {}
-        self.user_perm = {}
+        self.search_result = None
+        self.user_perm = get_group_user_perm(self.user)
+        self.perm_assets = sorted(self.user_perm.get('asset', []).keys(),
+                                  key=lambda x: [int(num) for num in x.ip.split('.') if num.isdigit()])
+        self.perm_asset_groups = self.user_perm.get('asset_group', [])
 
     @staticmethod
     def print_nav():
@@ -460,46 +463,83 @@ class Nav(object):
         """
         print textwrap.dedent(msg)
 
-    def search(self, str_r=''):
+    def get_asset_group_member(self, str_r):
         gid_pattern = re.compile(r'^g\d+$')
-        # 获取用户授权的所有主机信息
-        if not self.user_perm:
-            self.user_perm = get_group_user_perm(self.user)
-        user_asset_all = self.user_perm.get('asset').keys()
-        # 搜索结果保存
-        user_asset_search = []
-        if str_r:
-            # 资产组组id匹配
-            if gid_pattern.match(str_r):
-                gid = int(str_r.lstrip('g'))
-                # 获取资产组包含的资产
-                asset_group = get_object(AssetGroup, id=gid)
-                if asset_group:
-                    user_asset_search = asset_group.asset_set.all()
-                else:
-                    color_print('没有该资产组或没有权限')
-                    return
 
+        if gid_pattern.match(str_r):
+            gid = int(str_r.lstrip('g'))
+            # 获取资产组包含的资产
+            asset_group = get_object(AssetGroup, id=gid)
+            if asset_group:
+                self.search_result = list(asset_group.asset_set.all())
             else:
+                color_print('没有该资产组或没有权限')
+                return
+
+    def search(self, str_r=''):
+        # 搜索结果保存
+        if str_r:
+            try:
+                id_ = int(str_r)
+                if id_ < len(self.search_result):
+                    self.search_result = [self.search_result[id_]]
+                    return
+                else:
+                    raise ValueError
+
+            except (ValueError, TypeError):
                 # 匹配 ip, hostname, 备注
-                for asset in user_asset_all:
-                    if str_r in asset.ip or str_r in str(asset.hostname) or str_r in str(asset.comment):
-                        user_asset_search.append(asset)
+                self.search_result = [asset for asset in self.perm_assets if str_r in str(asset.ip)
+                                      or str_r in str(asset.hostname) or str_r in str(asset.comment)]
         else:
             # 如果没有输入就展现所有
-            user_asset_search = user_asset_all
+            self.search_result = self.perm_assets
 
-        self.search_result = dict(zip(range(len(user_asset_search)), user_asset_search))
+    def print_search_result(self):
         color_print('[%-3s] %-12s %-15s  %-5s  %-10s  %s' % ('ID', '主机名', 'IP', '端口', '系统用户', '备注'), 'title')
-        for index, asset in self.search_result.items():
-            # 获取该资产信息
-            asset_info = get_asset_info(asset)
-            # 获取该资产包含的角色
-            role = [str(role.name) for role in self.user_perm.get('asset').get(asset).get('role')]
-            print '[%-3s] %-15s %-15s  %-5s  %-10s  %s' % (index, asset.hostname, asset.ip, asset_info.get('port'),
-                                                            role, asset.comment)
+        if hasattr(self.search_result, '__iter__'):
+            for index, asset in enumerate(self.search_result):
+                # 获取该资产信息
+                asset_info = get_asset_info(asset)
+                # 获取该资产包含的角色
+                role = [str(role.name) for role in self.user_perm.get('asset').get(asset).get('role')]
+                print '[%-3s] %-15s %-15s  %-5s  %-10s  %s' % (index, asset.hostname, asset.ip, asset_info.get('port'),
+                                                               role, asset.comment)
         print
 
+    def try_connect(self):
+        try:
+            asset = self.search_result[0]
+            roles = list(self.user_perm.get('asset').get(asset).get('role'))
+            if len(roles) == 1:
+                role = roles[0]
+            elif len(roles) > 1:
+                print "\033[32m[ID] 系统用户\033[0m"
+                for index, role in enumerate(roles):
+                    print "[%-2s] %s" % (index, role.name)
+                print
+                print "授权系统用户超过1个，请输入ID, q退出"
+                try:
+                    role_index = raw_input("\033[1;32mID>:\033[0m ").strip()
+                    if role_index == 'q':
+                        return
+                    else:
+                        role = roles[int(role_index)]
+                except IndexError:
+                    color_print('请输入正确ID', 'red')
+                    return
+            else:
+                color_print('没有映射用户', 'red')
+                return
+
+            ssh_tty = SshTty(login_user, asset, role)
+            print('Connecting %s ...' % asset.hostname)
+            ssh_tty.connect()
+        except (KeyError, ValueError):
+            color_print('请输入正确ID', 'red')
+        except ServerError, e:
+            color_print(e, 'red')
+
     def print_asset_group(self):
         """
         打印用户授权的资产组
@@ -515,9 +555,6 @@ class Nav(object):
         批量执行命令
         """
         while True:
-            if not self.user_perm:
-                self.user_perm = get_group_user_perm(self.user)
-
             roles = self.user_perm.get('role').keys()
             if len(roles) > 1:  # 授权角色数大于1
                 color_print('[%-2s] %-15s' % ('ID', '系统用户'),  'info')
@@ -587,8 +624,6 @@ class Nav(object):
 
     def upload(self):
         while True:
-            if not self.user_perm:
-                self.user_perm = get_group_user_perm(self.user)
             try:
                 print "进入批量上传模式"
                 print "请输入主机名或ansible支持的pattern, 多个主机:分隔 q退出"
@@ -640,8 +675,6 @@ class Nav(object):
 
     def download(self):
         while True:
-            if not self.user_perm:
-                self.user_perm = get_group_user_perm(self.user)
             try:
                 print "进入批量下载模式"
                 print "请输入主机名或ansible支持的pattern, 多个主机:分隔,q退出"
@@ -723,9 +756,14 @@ def main():
                 sys.exit(0)
             if option in ['P', 'p', '\n', '']:
                 nav.search()
+                nav.print_search_result()
                 continue
-            if option.startswith('/') or gid_pattern.match(option):
+            if option.startswith('/'):
                 nav.search(option.lstrip('/'))
+                nav.print_search_result()
+            elif gid_pattern.match(option):
+                nav.get_asset_group_member(str_r=option)
+                nav.print_search_result()
             elif option in ['G', 'g']:
                 nav.print_asset_group()
                 continue
@@ -741,36 +779,12 @@ def main():
             elif option in ['Q', 'q', 'exit']:
                 sys.exit()
             else:
-                try:
-                    asset = nav.search_result[int(option)]
-                    roles = nav.user_perm.get('asset').get(asset).get('role')
-                    if len(roles) > 1:
-                        role_check = dict(zip(range(len(roles)), roles))
-                        print "\033[32m[ID] 系统用户\033[0m"
-                        for index, role in role_check.items():
-                            print "[%-2s] %s" % (index, role.name)
-                        print
-                        print "授权系统用户超过1个，请输入ID, q退出"
-                        try:
-                            role_index = raw_input("\033[1;32mID>:\033[0m ").strip()
-                            if role_index == 'q':
-                                continue
-                            else:
-                                role = role_check[int(role_index)]
-                        except IndexError:
-                            color_print('请输入正确ID', 'red')
-                            continue
-                    elif len(roles) == 1:
-                        role = list(roles)[0]
-                    else:
-                        color_print('没有映射用户', 'red')
-                        continue
-                    ssh_tty = SshTty(login_user, asset, role)
-                    ssh_tty.connect()
-                except (KeyError, ValueError):
-                    color_print('请输入正确ID', 'red')
-                except ServerError, e:
-                    color_print(e, 'red')
+                nav.search(option)
+                if len(nav.search_result) == 1:
+                    nav.try_connect()
+                else:
+                    nav.print_search_result()
+
     except IndexError, e:
         color_print(e)
         time.sleep(5)
diff --git a/install/install.py b/install/install.py
index 01b281a92..da26157a5 100755
--- a/install/install.py
+++ b/install/install.py
@@ -80,12 +80,12 @@ class PreSetup(object):
         self.ip = ''
         self.key = ''.join(random.choice(string.ascii_lowercase + string.digits) \
                            for _ in range(16))
-        self.dist = platform.dist()[0].lower()
-        self.version = platform.dist()[1]
+        self.dist = platform.linux_distribution(supported_dists=['system'])[0].lower()
+        self.version = platform.linux_distribution(supported_dists=['system'])[1]
 
     @property
     def _is_redhat(self):
-        if self.dist == "centos" or self.dist == "redhat" or self.dist == "fedora":
+        if self.dist == "centos" or self.dist == "redhat" or self.dist == "fedora" or self.dist == "amazon linux ami":
             return True
 
     @property
@@ -105,7 +105,7 @@ class PreSetup(object):
 
     def check_platform(self):
         if not (self._is_redhat or self._is_ubuntu):
-            print(u"支持的平台: CentOS, RedHat, Fedora, Debian, Ubuntu, 暂不支持其他平台安装.")
+            print(u"支持的平台: CentOS, RedHat, Fedora, Debian, Ubuntu, Amazon Linux, 暂不支持其他平台安装.")
             exit()
 
     @staticmethod
diff --git a/templates/setting.html b/templates/setting.html
index d13cf7f4f..061a71f0e 100644
--- a/templates/setting.html
+++ b/templates/setting.html
@@ -109,7 +109,7 @@
         timely: 2,
         theme: "yellow_right_effect",
         rules: {
-            check_name: [/^\w{2,20}$/, '大小写字母数字和下划线,2-20位'],
+            check_name: [/^(\w|\-){2,20}$/, '大小写字母、数字、中划线和下划线，2-20位'],
             check_port: [/^\d{1,5}$/, '端口号不正确'],
             either: function(){
                 return $('#password').val() == ''