diff --git a/src/linktools/__init__.py b/src/linktools/__init__.py
index bde5e026..a9dbd779 100644
--- a/src/linktools/__init__.py
+++ b/src/linktools/__init__.py
@@ -34,4 +34,4 @@
 from ._logging import LogHandler
 from ._config import Config
 from ._tools import ToolContainer, ToolExecError, Tool
-from ._environ import Environ, environ
+from ._environ import BaseEnviron, environ
diff --git a/src/linktools/__main__.py b/src/linktools/__main__.py
index b1701080..d0ec438a 100644
--- a/src/linktools/__main__.py
+++ b/src/linktools/__main__.py
@@ -33,10 +33,9 @@
 from rich import get_console
 from rich.tree import Tree
 
-from . import cli
 from ._environ import environ
+from .cli import BaseCommand, walk_commands
 from .decorator import cached_property
-from .version import __description__
 
 
 class CategoryInfo:
@@ -52,11 +51,14 @@ def __repr__(self):
 
 class CommandInfo:
 
-    def __init__(self, name: str, category: CategoryInfo, command: cli.Command):
-        self.name = name
+    def __init__(self, category: CategoryInfo, command: BaseCommand):
         self.category = category
         self.command = command
 
+    @property
+    def name(self):
+        return self.command.name
+
     @property
     def description(self):
         return self.command.description
@@ -65,7 +67,7 @@ def __repr__(self):
         return self.name
 
 
-class Command(cli.Command):
+class Command(BaseCommand):
 
     @cached_property
     def _commands(self):
@@ -80,10 +82,9 @@ def _commands(self):
         for category in module_categories:
             commands[category] = []
             path = os.path.join(module_path, category.name)
-            for name, command in cli.walk_commands(path):
+            for command in walk_commands(path):
                 commands[category].append(
                     CommandInfo(
-                        name=name,
                         category=category,
                         command=command,
                     )
@@ -123,7 +124,8 @@ def run(self, args: [str]) -> Optional[int]:
                 node.add(f"👉 {command.category.prefix}[bold red]{command.name}[/bold red]: {command.description}")
 
         console = get_console()
-        console.print(__description__, highlight=False)
+        if environ.description:
+            console.print(environ.description, highlight=False)
         console.print(tree, highlight=False)
 
 
diff --git a/src/linktools/_environ.py b/src/linktools/_environ.py
index e432a258..ed59fba6 100644
--- a/src/linktools/_environ.py
+++ b/src/linktools/_environ.py
@@ -26,6 +26,7 @@
   / ==ooooooooooooooo==.o.  ooo= //   ,`\--{)B     ,"
  /_==__==========__==_ooo__ooo=_/'   /___________,"
 """
+import abc
 import json
 import os
 import pathlib
@@ -39,74 +40,72 @@
     __description__ as __module_description__, \
     __version__ as __module_version__
 
-_T = TypeVar("_T")
+T = TypeVar("T")
+root_path = os.path.dirname(__file__)
+asset_path = os.path.join(root_path, "assets")
 
 
-class Environ:
+class BaseEnviron(abc.ABC):
     __missing__ = object()
 
     @property
+    @abc.abstractmethod
     def name(self) -> str:
-        return __module_name__
-
-    @property
-    def description(self) -> str:
-        return __module_description__
+        """
+        模块名
+        """
+        pass
 
     @property
+    @abc.abstractmethod
     def version(self) -> str:
-        return __module_version__
-
-    @cached_property
-    def logger(self):
-        from ._logging import get_logger
+        """
+        模块版本号
+        """
+        pass
 
-        return get_logger(prefix=self.name)
-
-    def get_logger(self, name: str = None):
-        from ._logging import get_logger
-
-        return get_logger(name=name, prefix=self.name)
+    @property
+    def description(self) -> str:
+        """
+        模块描述
+        """
+        return ""
 
-    @cached_property
+    @property
+    @abc.abstractmethod
     def root_path(self) -> str:
-        return os.path.abspath(os.path.join(os.path.dirname(__file__)))
-
-    def get_asset_path(self, *paths: [str]):
-        return self._get_path(self.root_path, "assets", *paths, create=False, create_parent=False)
+        """
+        模块根目录
+        """
+        pass
 
     @cached_property
     def data_path(self):
-        path = self.get_config("SETTING_DATA_PATH")
+        """
+        存放文件目录
+        """
+        path = self.get_config("DATA_PATH")
         if not path:
-            path = os.path.join(self.get_config("SETTING_STORAGE_PATH"), "data")
+            path = os.path.join(self.get_config("STORAGE_PATH"), "data")
         return path
 
     @cached_property
     def temp_path(self):
-        path = self.get_config("SETTING_TEMP_PATH")
+        """
+        存放临时文件目录
+        """
+        path = self.get_config("TEMP_PATH")
         if not path:
-            path = os.path.join(self.get_config("SETTING_STORAGE_PATH"), "temp")
+            path = os.path.join(self.get_config("STORAGE_PATH"), "temp")
         return path
 
-    def get_data_path(self, *paths: [str], create_parent: bool = False):
-        return self._get_path(self.data_path, *paths, create=False, create_parent=create_parent)
-
-    def get_data_dir(self, *paths: [str], create: bool = False):
-        return self._get_path(self.data_path, *paths, create=create, create_parent=False)
-
-    def get_temp_path(self, *paths: [str], create_parent: bool = False):
-        return self._get_path(self.temp_path, *paths, create=False, create_parent=create_parent)
-
-    def get_temp_dir(self, *paths: [str], create: bool = False):
-        return self._get_path(self.temp_path, *paths, create=create, create_parent=False)
-
     @classmethod
     def _get_path(cls, root_path: str, *paths: [str], create: bool = False, create_parent: bool = False):
         target_path = parent_path = os.path.abspath(root_path)
         for path in paths:
             target_path = os.path.abspath(os.path.join(parent_path, path))
-            if target_path == parent_path or parent_path != os.path.commonpath([parent_path, target_path]):
+            common_path = os.path.commonpath([parent_path, target_path])
+            if target_path == parent_path or parent_path != common_path:
                 raise Exception(f"Unsafe path \"{path}\"")
             parent_path = target_path
         dir_path = None
@@ -119,6 +118,53 @@ def _get_path(cls, root_path: str, *paths: [str], create: bool = False, create_p
                 os.makedirs(dir_path)
         return target_path
 
+    def get_path(self, *paths: str):
+        """
+        获取根目录下的子目录
+        """
+        return self._get_path(self.root_path, *paths, create=False, create_parent=False)
+
+    def get_data_path(self, *paths: str, create_parent: bool = False):
+        """
+        获取数据目录下的子路径
+        """
+        return self._get_path(self.data_path, *paths, create=False, create_parent=create_parent)
+
+    def get_data_dir(self, *paths: str, create: bool = False):
+        """
+        获取数据目录下的子目录
+        """
+        return self._get_path(self.data_path, *paths, create=create, create_parent=False)
+
+    def get_temp_path(self, *paths: str, create_parent: bool = False):
+        """
+        获取临时文件目录下的子路径
+        """
+        return self._get_path(self.temp_path, *paths, create=False, create_parent=create_parent)
+
+    def get_temp_dir(self, *paths: str, create: bool = False):
+        """
+        获取临时文件目录下的子目录
+        """
+        return self._get_path(self.temp_path, *paths, create=create, create_parent=False)
+
+    @cached_property
+    def logger(self):
+        """
+        模块根logger
+        """
+        from ._logging import get_logger
+
+        return get_logger(prefix=self.name)
+
+    def get_logger(self, name: str = None):
+        """
+        获取模块名作为前缀的logger
+        """
+        from ._logging import get_logger
+
+        return get_logger(name=name, prefix=self.name)
+
     @cached_property
     def _config(self):
         from ._config import Config
@@ -126,14 +172,10 @@ def _config(self):
         config = Config()
 
         # 初始化全局存储路径配置，优先级低于data、temp路径
-        config["SETTING_STORAGE_PATH"] = \
-            os.environ.get("SETTING_STORAGE_PATH") or \
+        config["STORAGE_PATH"] = \
+            os.environ.get("STORAGE_PATH") or \
             os.path.join(str(pathlib.Path.home()), f".{__module_name__}")
 
-        # 初始化data、temp路径配置
-        config["SETTING_DATA_PATH"] = os.environ.get("SETTING_DATA_PATH")  # default {SETTING_STORAGE_PATH}/data
-        config["SETTING_TEMP_PATH"] = os.environ.get("SETTING_TEMP_PATH")  # default {SETTING_STORAGE_PATH}/temp
-
         # 初始化下载相关参数
         config["SETTING_DOWNLOAD_USER_AGENT"] = \
             "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) " \
@@ -142,8 +184,8 @@ def _config(self):
             "Safari/537.36"
 
         # 导入configs文件夹中所有配置文件
-        config.from_file(self.get_asset_path("tools.yml"), load=yaml.safe_load)
-        config.from_file(self.get_asset_path("android-tools.json"), load=json.load)
+        config.from_file(self._get_path(asset_path, "tools.yml"), load=yaml.safe_load)
+        config.from_file(self._get_path(asset_path, "android-tools.json"), load=json.load)
 
         # 导入环境变量LINKTOOLS_SETTING中的配置文件
         config.from_envvar("LINKTOOLS_SETTING", silent=True)
@@ -151,6 +193,9 @@ def _config(self):
         return config
 
     def get_configs(self, namespace: str, lowercase: bool = True, trim_namespace: bool = True) -> Dict[str, Any]:
+        """
+        根据命名空间获取配置列表
+        """
         rv = {}
         for k, v in self._config.items():
             if not k.startswith(namespace):
@@ -164,28 +209,46 @@ def get_configs(self, namespace: str, lowercase: bool = True, trim_namespace: bo
             rv[key] = v
         return rv
 
-    def get_config(self, key, type: Type[_T] = None, default: _T = None) -> Optional[_T]:
+    def get_config(self, key, cast_type: Type[T] = None, accept_empty: bool = False, default: T = None) -> Optional[T]:
+        """
+        获取指定配置，优先会从环境变量中获取
+        """
         try:
-            value = self._config.get(key, self.__missing__)
-            if value is not self.__missing__:
-                return value if type is None else type(value)
+            new_key = f"{self.name}_{key}".upper()
+            if new_key in os.environ:
+                value = os.environ.get(new_key)
+                if accept_empty or value:
+                    return value if cast_type is None else cast_type(value)
         except Exception as e:
-            self.logger.debug(f"Get config \"{key}\" error: {e}")
+            self.logger.debug(f"Get config \"{key}\" from system environ error: {e}")
 
         try:
-            value = os.environ.get(key, self.__missing__)
-            if value is not self.__missing__:
-                return value if type is None else type(value)
+            if key in self._config:
+                value = self._config.get(key)
+                if accept_empty or value:
+                    return value if cast_type is None else cast_type(value)
         except Exception as e:
-            self.logger.debug(f"Get environ \"{key}\" error: {e}")
+            self.logger.debug(f"Get config \"{key}\" error: {e}")
 
         return default
 
+    def update_configs(self, **kwargs) -> None:
+        """
+        更新配置
+        """
+        self._config.update(**kwargs)
+
     def set_config(self, key: str, value: Any) -> None:
+        """
+        更新配置
+        """
         self._config[key] = value
 
     @cached_property
     def tools(self):
+        """
+        工具集
+        """
         from ._tools import ToolContainer
 
         tools = ToolContainer()
@@ -207,6 +270,9 @@ def tools(self):
         return tools
 
     def get_tool(self, name: str, **kwargs):
+        """
+        获取指定工具
+        """
         tool = self.tools[name]
         if len(kwargs) != 0:
             tool = tool.copy(**kwargs)
@@ -214,39 +280,88 @@ def get_tool(self, name: str, **kwargs):
 
     @property
     def debug(self) -> bool:
-        return self.get_config("__DEBUG__", default=False)
+        """
+        debug模式
+        """
+        from . import utils
+
+        return self.get_config("DEBUG", cast_type=utils.bool, default=False)
 
     @debug.setter
     def debug(self, value: bool):
-        self.set_config("__DEBUG__", value)
+        """
+        debug模式
+        """
+        self.set_config("DEBUG", value)
 
     @property
     def show_log_time(self) -> bool:
-        return self.get_config("__SHOW_LOG_TIME__", default=False)
+        """
+        显示日志时间
+        """
+        from . import utils
+
+        return self.get_config("SHOW_LOG_TIME", cast_type=utils.bool, default=False)
 
     @show_log_time.setter
     def show_log_time(self, value: bool):
+        """
+        显示日志时间
+        """
         from ._logging import LogHandler
         handler = LogHandler.get_instance()
         if handler:
             handler.show_time = value
-        self.set_config("__SHOW_LOG_TIME__", value)
+        self.set_config("SHOW_LOG_TIME", value)
 
     @property
     def show_log_level(self) -> bool:
-        return self.get_config("__SHOW_LOG_LEVEL__", default=True)
+        """
+        显示日志级别
+        """
+        from . import utils
+
+        return self.get_config("SHOW_LOG_LEVEL", cast_type=utils.bool, default=True)
 
     @show_log_level.setter
     def show_log_level(self, value: bool):
+        """
+        显示日志级别
+        """
         from ._logging import LogHandler
         handler = LogHandler.get_instance()
         if handler:
             handler.show_level = value
-        self.set_config("__SHOW_LOG_LEVEL__", value)
+        self.set_config("SHOW_LOG_LEVEL", value)
 
     @property
     def system(self) -> str:
+        """
+        系统名称
+        """
         return self.tools.system
 
 
+class Environ(BaseEnviron):
+
+    @property
+    def name(self) -> str:
+        return __module_name__
+
+    @property
+    def description(self) -> str:
+        return __module_description__
+
+    @property
+    def version(self) -> str:
+        return __module_version__
+
+    @property
+    def root_path(self) -> str:
+        return root_path
+
+    def get_asset_path(self, *paths: str):
+        return self._get_path(asset_path, *paths)
+
+
 environ = Environ()
diff --git a/src/linktools/cli/__init__.py b/src/linktools/cli/__init__.py
index 5ae8a8c4..10bb5af7 100644
--- a/src/linktools/cli/__init__.py
+++ b/src/linktools/cli/__init__.py
@@ -28,4 +28,4 @@
 """
 
 from ._cli import walk_commands
-from ._command import Command, AndroidCommand, IOSCommand
+from ._command import BaseCommand, AndroidCommand, IOSCommand
diff --git a/src/linktools/cli/_cli.py b/src/linktools/cli/_cli.py
index a46ac374..52ccbb97 100644
--- a/src/linktools/cli/_cli.py
+++ b/src/linktools/cli/_cli.py
@@ -4,19 +4,11 @@
 from importlib.util import module_from_spec
 from pkgutil import walk_packages
 
-from ._command import Command
+from ._command import BaseCommand
 from .._environ import environ
 
 
 def walk_commands(path: str):
-    # for entry in sorted(os.scandir(path), key=lambda o: o.name):
-    #     entry: os.DirEntry = entry
-    #     if entry.is_dir() and not entry.name.startswith("_"):
-    #         yield from walk_commands(
-    #             os.path.join(path, entry.name),
-    #             f"{package}.{entry.name}"
-    #         )
-
     for finder, name, is_pkg in sorted(walk_packages(path=[path]), key=lambda i: i[1]):
         if not is_pkg:
             try:
@@ -24,7 +16,7 @@ def walk_commands(path: str):
                 module = module_from_spec(spec)
                 spec.loader.exec_module(module)
                 command = getattr(module, "command", None)
-                if command and isinstance(command, Command):
-                    yield name, command
+                if command and isinstance(command, BaseCommand):
+                    yield command
             except Exception as e:
                 environ.logger.warning(f"Ignore {name}, caused by {e.__class__.__name__}: {e}")
diff --git a/src/linktools/cli/_command.py b/src/linktools/cli/_command.py
index 208583f7..9a081428 100644
--- a/src/linktools/cli/_command.py
+++ b/src/linktools/cli/_command.py
@@ -42,16 +42,20 @@
 from rich.prompt import IntPrompt
 from rich.table import Table
 
-from .._environ import Environ, environ
+from .._environ import BaseEnviron, environ
 from .._logging import LogHandler
 from ..decorator import cached_property
 from ..utils import ignore_error
 
 
-class Command(abc.ABC):
+class BaseCommand(abc.ABC):
 
     @property
-    def environ(self) -> Environ:
+    def name(self):
+        return self.__module__
+
+    @property
+    def environ(self) -> BaseEnviron:
         return environ
 
     @property
@@ -185,7 +189,7 @@ def __call__(self, args: [str] = None) -> int:
         return exit_code
 
 
-class AndroidCommand(Command, ABC):
+class AndroidCommand(BaseCommand, ABC):
 
     @property
     def known_errors(self) -> Tuple[Type[BaseException]]:
@@ -310,7 +314,7 @@ def wrapper():
                            help="use last device")
 
 
-class IOSCommand(Command, ABC):
+class IOSCommand(BaseCommand, ABC):
 
     @property
     def known_errors(self) -> Tuple[Type[BaseException]]:
diff --git a/src/linktools/cli/commands/android/adb.py b/src/linktools/cli/commands/android/adb.py
index fa6451ea..cf2b43ca 100755
--- a/src/linktools/cli/commands/android/adb.py
+++ b/src/linktools/cli/commands/android/adb.py
@@ -29,11 +29,11 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import cli
 from linktools.android import Adb
+from linktools.cli import AndroidCommand
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Adb that supports multiple devices
     """
diff --git a/src/linktools/cli/commands/android/agent.py b/src/linktools/cli/commands/android/agent.py
index d4eadad8..1cf4fdd5 100755
--- a/src/linktools/cli/commands/android/agent.py
+++ b/src/linktools/cli/commands/android/agent.py
@@ -29,10 +29,10 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import cli
+from linktools.cli import AndroidCommand
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Debug android-tools.apk
     """
diff --git a/src/linktools/cli/commands/android/app.py b/src/linktools/cli/commands/android/app.py
index 9d2a0540..4b5511b9 100755
--- a/src/linktools/cli/commands/android/app.py
+++ b/src/linktools/cli/commands/android/app.py
@@ -29,9 +29,10 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, environ, cli
+from linktools import utils, environ
 from linktools.android import Package, Permission, \
     Component, Activity, Service, Receiver, Provider, IntentFilter
+from linktools.cli import AndroidCommand
 
 
 class PrintLevel:
@@ -224,7 +225,7 @@ def _print_intent(cls, stream: PrintStreamWrapper, intent: IntentFilter, indent:
             stream.print("Type [%s]" % type, indent=indent + 4, level=level)
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Fetch application info
     """
diff --git a/src/linktools/cli/commands/android/debug.py b/src/linktools/cli/commands/android/debug.py
index cf75a34a..18ff3a91 100755
--- a/src/linktools/cli/commands/android/debug.py
+++ b/src/linktools/cli/commands/android/debug.py
@@ -29,10 +29,11 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, cli
+from linktools import utils
+from linktools.cli import AndroidCommand
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Debug app by jdb
     """
diff --git a/src/linktools/cli/commands/android/frida.py b/src/linktools/cli/commands/android/frida.py
index 3fbdfe55..3703faa2 100755
--- a/src/linktools/cli/commands/android/frida.py
+++ b/src/linktools/cli/commands/android/frida.py
@@ -29,12 +29,13 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, environ, cli
+from linktools import utils, environ
+from linktools.cli import AndroidCommand
 from linktools.frida import FridaApplication, FridaShareScript, FridaScriptFile, FridaEvalCode
 from linktools.frida.android import AndroidFridaServer
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Easy to use frida (require Android device rooted)
     """
diff --git a/src/linktools/cli/commands/android/info.py b/src/linktools/cli/commands/android/info.py
index 5e737cb7..7b78570f 100644
--- a/src/linktools/cli/commands/android/info.py
+++ b/src/linktools/cli/commands/android/info.py
@@ -29,7 +29,8 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import environ, cli
+from linktools import environ
+from linktools.cli import AndroidCommand
 
 props = (
     "ro.product.manufacturer",
@@ -70,7 +71,7 @@
 )
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Fetch device information
     """
diff --git a/src/linktools/cli/commands/android/intent.py b/src/linktools/cli/commands/android/intent.py
index 33c69e49..4eaaf5c2 100755
--- a/src/linktools/cli/commands/android/intent.py
+++ b/src/linktools/cli/commands/android/intent.py
@@ -32,10 +32,11 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, environ, cli
+from linktools import utils, environ
+from linktools.cli import AndroidCommand
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Common intent actions
     """
diff --git a/src/linktools/cli/commands/android/objection.py b/src/linktools/cli/commands/android/objection.py
index 7f31c7ec..5aabebea 100644
--- a/src/linktools/cli/commands/android/objection.py
+++ b/src/linktools/cli/commands/android/objection.py
@@ -29,11 +29,12 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, environ, cli
+from linktools import utils, environ
+from linktools.cli import AndroidCommand
 from linktools.frida.android import AndroidFridaServer
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Easy to use objection (require Android device rooted)
     """
diff --git a/src/linktools/cli/commands/android/pidcat.py b/src/linktools/cli/commands/android/pidcat.py
index 9a5835f4..e1294b71 100755
--- a/src/linktools/cli/commands/android/pidcat.py
+++ b/src/linktools/cli/commands/android/pidcat.py
@@ -25,7 +25,7 @@
 from subprocess import PIPE
 from typing import Optional
 
-from linktools import cli
+from linktools.cli import AndroidCommand
 
 __version__ = '2.1.0'
 
@@ -55,7 +55,7 @@ def get_char_width(char):
     return 1
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Filter logcat by package name
     """
diff --git a/src/linktools/cli/commands/android/top.py b/src/linktools/cli/commands/android/top.py
index c2eca0d8..64f263b0 100755
--- a/src/linktools/cli/commands/android/top.py
+++ b/src/linktools/cli/commands/android/top.py
@@ -32,10 +32,11 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, cli, environ
+from linktools import utils, environ
+from linktools.cli import AndroidCommand
 
 
-class Command(cli.AndroidCommand):
+class Command(AndroidCommand):
     """
     Fetch current running app's basic information
     """
diff --git a/src/linktools/cli/commands/common/grep.py b/src/linktools/cli/commands/common/grep.py
index 5edbe6ce..16cf411e 100755
--- a/src/linktools/cli/commands/common/grep.py
+++ b/src/linktools/cli/commands/common/grep.py
@@ -40,7 +40,8 @@
 from rich.highlighter import NullHighlighter
 from rich.text import Text
 
-from linktools import utils, environ, cli
+from linktools import utils, environ
+from linktools.cli import BaseCommand
 
 pprint = functools.partial(get_console().print, sep="", markup=False, highlight=NullHighlighter)
 
@@ -191,7 +192,7 @@ def match_content(self, content):
         return out
 
 
-class Command(cli.Command):
+class Command(BaseCommand):
     """
     Match files with regular expression
     """
diff --git a/src/linktools/cli/commands/common/shell.py b/src/linktools/cli/commands/common/shell.py
index ce68a241..43820c07 100644
--- a/src/linktools/cli/commands/common/shell.py
+++ b/src/linktools/cli/commands/common/shell.py
@@ -7,10 +7,11 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, environ, cli
+from linktools import utils, environ
+from linktools.cli import BaseCommand
 
 
-class Command(cli.Command):
+class Command(BaseCommand):
     """
     Shell with environment variables already initialized
     """
diff --git a/src/linktools/cli/commands/common/tools.py b/src/linktools/cli/commands/common/tools.py
index f2efb5cc..eac60b76 100755
--- a/src/linktools/cli/commands/common/tools.py
+++ b/src/linktools/cli/commands/common/tools.py
@@ -31,10 +31,11 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import environ, cli
+from linktools import environ
+from linktools.cli import BaseCommand
 
 
-class Command(cli.Command):
+class Command(BaseCommand):
     """
     Tools downloaded from the web
     """
diff --git a/src/linktools/cli/commands/ios/frida.py b/src/linktools/cli/commands/ios/frida.py
index c07d16b5..b3d28400 100755
--- a/src/linktools/cli/commands/ios/frida.py
+++ b/src/linktools/cli/commands/ios/frida.py
@@ -29,12 +29,13 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, environ, cli
+from linktools import utils, environ
+from linktools.cli import IOSCommand
 from linktools.frida import FridaApplication, FridaShareScript, FridaScriptFile, FridaEvalCode
 from linktools.frida.ios import IOSFridaServer
 
 
-class Command(cli.IOSCommand):
+class Command(IOSCommand):
     """
     Easy to use frida (require iOS device jailbreak)
     """
diff --git a/src/linktools/cli/commands/ios/objection.py b/src/linktools/cli/commands/ios/objection.py
index 2906f91d..215e9bf4 100644
--- a/src/linktools/cli/commands/ios/objection.py
+++ b/src/linktools/cli/commands/ios/objection.py
@@ -29,11 +29,12 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import utils, environ, cli
+from linktools import utils, environ
+from linktools.cli import IOSCommand
 from linktools.frida.ios import IOSFridaServer
 
 
-class Command(cli.IOSCommand):
+class Command(IOSCommand):
     """
     Easy to use objection (require iOS device jailbreak)
     """
diff --git a/src/linktools/cli/commands/ios/scp.py b/src/linktools/cli/commands/ios/scp.py
index 90bdcadb..c47045b8 100644
--- a/src/linktools/cli/commands/ios/scp.py
+++ b/src/linktools/cli/commands/ios/scp.py
@@ -8,7 +8,8 @@
 import paramiko
 from paramiko.ssh_exception import SSHException
 
-from linktools import utils, cli
+from linktools import utils
+from linktools.cli import IOSCommand
 from linktools.ios import Device
 
 _REMOTE_PATH_PREFIX = "@"
@@ -31,7 +32,7 @@ def __fspath__(self):
         return self._path
 
 
-class Command(cli.IOSCommand):
+class Command(IOSCommand):
     """
     OpenSSH secure file copy (require iOS device jailbreak)
     """
diff --git a/src/linktools/cli/commands/ios/sib.py b/src/linktools/cli/commands/ios/sib.py
index 013fe62b..09822e74 100644
--- a/src/linktools/cli/commands/ios/sib.py
+++ b/src/linktools/cli/commands/ios/sib.py
@@ -4,11 +4,11 @@
 from argparse import ArgumentParser
 from typing import Optional
 
-from linktools import cli
+from linktools.cli import IOSCommand
 from linktools.ios import Sib
 
 
-class Command(cli.IOSCommand):
+class Command(IOSCommand):
     """
     Sib that supports multiple devices
     """
diff --git a/src/linktools/cli/commands/ios/ssh.py b/src/linktools/cli/commands/ios/ssh.py
index a377e040..45336b43 100644
--- a/src/linktools/cli/commands/ios/ssh.py
+++ b/src/linktools/cli/commands/ios/ssh.py
@@ -32,11 +32,12 @@
 import paramiko
 from paramiko.ssh_exception import SSHException
 
-from linktools import cli, utils
+from linktools import utils
+from linktools.cli import IOSCommand
 from linktools.ios import Device
 
 
-class Command(cli.IOSCommand):
+class Command(IOSCommand):
     """
     OpenSSH remote login client (require iOS device jailbreak)
     """
diff --git a/src/linktools/utils/_url.py b/src/linktools/utils/_url.py
index f046364e..ec3ffc7e 100644
--- a/src/linktools/utils/_url.py
+++ b/src/linktools/utils/_url.py
@@ -65,7 +65,6 @@ def user_agent(style=None) -> str:
         user_agent = _UserAgent()
 
         if style:
-            print(user_agent[style])
             return user_agent[style]
 
         return user_agent.random
diff --git a/src/linktools/utils/_utils.py b/src/linktools/utils/_utils.py
index 116017a4..7ed322c9 100755
--- a/src/linktools/utils/_utils.py
+++ b/src/linktools/utils/_utils.py
@@ -104,7 +104,7 @@ def ignore_error(fn: Callable[..., _T], *args, **kwargs) -> _T:
 
 
 # noinspection PyShadowingBuiltins
-def cast(type: type, obj: object, default=None):
+def cast(type: Type[_T], obj: Any, default: _T = None) -> Optional[_T]:
     """
     类型转换
     :param type: 目标类型
@@ -118,7 +118,7 @@ def cast(type: type, obj: object, default=None):
         return default
 
 
-def int(obj: object, default: int = 0) -> int:
+def int(obj: Any, default: int = 0) -> "int":
     """
     转为int
     :param obj: 需要转换的值
@@ -128,31 +128,36 @@ def int(obj: object, default: int = 0) -> int:
     return cast(type(0), obj, default=default)
 
 
-def bool(obj: object, default: bool = False) -> "bool":
+def bool(obj: Any, default: bool = False) -> "bool":
     """
     转为bool
     :param obj: 需要转换的值
     :param default: 默认值
     :return: 转换后的值
     """
-    return cast(type(True), obj, default=default)
+    bool_type = type(True)
+    if isinstance(obj, bool_type):
+        return obj
+    if isinstance(obj, str):
+        return cast(lambda o: o.lower() == "true", obj, default=default)
+    return cast(bool_type, obj, default=default)
 
 
-def is_contain(obj: object, key: object) -> "bool":
+def is_contain(obj: Any, key: Any) -> "bool":
     """
     是否包含内容
     :param obj: 对象
     :param key: 键
     :return: 是否包含
     """
-    if object is None:
+    if obj is None:
         return False
     if isinstance(obj, Iterable):
         return key in obj
     return False
 
 
-def is_empty(obj: object) -> "bool":
+def is_empty(obj: Any) -> "bool":
     """
     对象是否为空
     :param obj: 对象