diff --git a/askchat/__init__.py b/askchat/__init__.py
index a60dee9..580ab93 100644
--- a/askchat/__init__.py
+++ b/askchat/__init__.py
@@ -2,11 +2,13 @@
 
 __author__ = """Rex Wang"""
 __email__ = '1073853456@qq.com'
-__version__ = '1.1.2'
+__version__ = '1.1.3'
 
 import asyncio
 from pathlib import Path
 import click
+from dotenv import set_key
+import os
 
 # Main environment file
 CONFIG_PATH = Path.home() / ".askchat"
@@ -14,6 +16,24 @@
 MAIN_ENV_PATH = Path.home() / '.askchat' / '.env'
 ENV_PATH = Path.home() / '.askchat' / 'envs'
 
+raw_env_text = f""""# Description: Env file for askchat.
+# Current version: {__version__}
+
+# The base url of the API (with suffix /v1)
+# This will override OPENAI_API_BASE_URL if both are set.
+OPENAI_API_BASE=''
+
+# The base url of the API (without suffix /v1)
+OPENAI_API_BASE_URL=''
+
+# Your API key
+OPENAI_API_KEY=''
+
+# The default model name
+# You can use `askchat --all-valid-models` to see supported models
+OPENAI_API_MODEL=''
+"""
+
 # Autocompletion
 # environment name completion
 class EnvNameCompletionType(click.ParamType):
@@ -42,20 +62,36 @@ async def show_resp(chat, **options):
         print() # add a newline if the message doesn't end with one
     return msg
 
-def write_config(config_file, api_key, model, base_url, api_base):
-    """Write the environment variables to a config file."""
-    def write_var(f, var, value, desc):
-        value = value if value else ""
-        f.write(f"\n\n# {desc}\n")
-        f.write(f'{var}="{value}"')
+def set_keys(config_file, keys):
+    """Set multiple keys in the config file."""
+    for key, value in keys.items():
+        if value:
+            set_key(config_file, key, value)
+
+def raw_config(config_file:str):
+    """Empty config file."""
+    if not CONFIG_PATH.exists():
+        CONFIG_PATH.mkdir(parents=True)
     with open(config_file, "w") as f:
-        f.write("#Description: Env file for askchat.\n" +\
-                "#Current version: " + __version__)
-        # write the environment table
-        write_var(f, "OPENAI_API_BASE", api_base, "The base url of the API (with suffix /v1)" +\
-                    "\n# This will override OPENAI_API_BASE_URL if both are set.")
-        write_var(f, "OPENAI_API_BASE_URL", base_url, "The base url of the API (without suffix /v1)")
-
-        write_var(f, "OPENAI_API_KEY", api_key, "Your API key")
-        write_var(f, "OPENAI_API_MODEL", model, "The model name\n" +\
-                    "# You can use `askchat --all-valid-models` to see supported models")
\ No newline at end of file
+        f.write(raw_env_text)
+
+def init_config(config_file:str):
+    """Initialize the config file with the current environment variables."""
+    raw_config(config_file)
+    set_keys(config_file, {
+        "OPENAI_API_KEY": os.getenv("OPENAI_API_KEY"),
+        "OPENAI_API_MODEL": os.getenv("OPENAI_API_MODEL"),
+        "OPENAI_API_BASE_URL": os.getenv("OPENAI_API_BASE_URL"),
+        "OPENAI_API_BASE": os.getenv("OPENAI_API_BASE"),
+    })
+
+def write_config(config_file, api_key, model, base_url, api_base, overwrite=False):
+    """Write the environment variables to a config file."""
+    if overwrite or not config_file.exists():
+        raw_config(config_file)
+    set_keys(config_file, {
+        "OPENAI_API_KEY": api_key,
+        "OPENAI_API_MODEL": model,
+        "OPENAI_API_BASE_URL": base_url,
+        "OPENAI_API_BASE": api_base,
+    })
\ No newline at end of file
diff --git a/askchat/askenv.py b/askchat/askenv.py
index 75e2787..9afd8d3 100644
--- a/askchat/askenv.py
+++ b/askchat/askenv.py
@@ -41,7 +41,7 @@ def new(name, api_key, base_url, api_base, model):
         click.confirm("Do you want to continue?", abort=True)
     else:
         click.echo(f"Environment '{name}' created.")
-    write_config(config_path, api_key, model, base_url, api_base)
+    write_config(config_path, api_key, model, base_url, api_base, overwrite=True)
 
 @cli.command()
 @click.argument('name', required=False, type=EnvNameCompletionType())
@@ -120,16 +120,10 @@ def config(name, api_key, base_url, api_base, model):
         return
     config_path = ENV_PATH / f'{name}.env' if name else MAIN_ENV_PATH
     if not config_path.exists():
-        click.echo(f"Environment '{config_path}' not found.")
+        click.echo(f"Environment '{config_path}' not found." +\
+                   "Use `askenv new` to create a new environment." )
         return
-    if api_key:
-        set_key(config_path, "OPENAI_API_KEY", api_key)
-    if base_url:
-        set_key(config_path, "OPENAI_API_BASE_URL", base_url)
-    if api_base:
-        set_key(config_path, "OPENAI_API_BASE", api_base)
-    if model:
-        set_key(config_path, "OPENAI_API_MODEL", model)
+    write_config(config_path, api_key, model, base_url, api_base)
     click.echo(f"Environment {config_path} updated.")
 
 if __name__ == '__main__':
diff --git a/askchat/cli.py b/askchat/cli.py
index c55a62b..c6b343a 100644
--- a/askchat/cli.py
+++ b/askchat/cli.py
@@ -8,7 +8,7 @@
 from chattool import Chat, debug_log
 from pathlib import Path
 from askchat import (
-      show_resp, write_config
+      show_resp, write_config, init_config
     , ENV_PATH, MAIN_ENV_PATH
     , CONFIG_PATH, CONFIG_FILE
     , EnvNameCompletionType, ChatFileCompletionType
@@ -37,12 +37,10 @@ def setup():
 def generate_config_callback(ctx, param, value):
     """Generate a configuration file by environment table."""
     if not value: return
-    api_key, model = os.getenv("OPENAI_API_KEY"), os.getenv("OPENAI_API_MODEL")
-    base_url, api_base = os.getenv("OPENAI_API_BASE_URL"), os.getenv("OPENAI_API_BASE")
     # save the config file
     if os.path.exists(CONFIG_FILE):
         click.confirm(f"Overwrite the existing configuration file {CONFIG_FILE}?", abort=True)
-    write_config(CONFIG_FILE, api_key, model, base_url, api_base)
+    init_config(CONFIG_FILE)
     print("Created config file at", CONFIG_FILE)
     ctx.exit()
 
diff --git a/setup.py b/setup.py
index 8f67ed6..260b13c 100644
--- a/setup.py
+++ b/setup.py
@@ -4,12 +4,12 @@
 
 from setuptools import setup, find_packages
 
-VERSION = '1.1.2'
+VERSION = '1.1.3'
 
 with open('README.md') as readme_file:
     readme = readme_file.read()
 
-requirements = ['chattool>=3.1.3', "python-dotenv>=0.17.0", 'Click>=8.0']
+requirements = ['chattool>=3.1.4', "python-dotenv>=0.17.0", 'Click>=8.0']
 
 test_requirements = ['pytest>=3']
 
diff --git a/tests/test_askenv.py b/tests/test_askenv.py
index 30d75b1..30b1d95 100644
--- a/tests/test_askenv.py
+++ b/tests/test_askenv.py
@@ -33,7 +33,7 @@ def test_overwrite_environment_confirm(runner, setup_env):
     assert "Do you want to continue?" in result.output
     # Verify the environment was overwritten by checking if the new API key is in the file
     with open(config_path) as f:
-        assert 'OPENAI_API_KEY="456"' in f.read()
+        assert "OPENAI_API_KEY='456'" in f.read()
 
 def test_list_initially_empty(runner, setup_env):
     """Ensure no environments are listed when none have been created."""