diff --git a/poetry.lock b/poetry.lock
index acd957d..f964b0d 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -110,6 +110,21 @@ mccabe = ">=0.6.0,<0.7.0"
 pycodestyle = ">=2.5.0,<2.6.0"
 pyflakes = ">=2.1.0,<2.2.0"
 
+[[package]]
+category = "main"
+description = "Read metadata from Python packages"
+name = "importlib-metadata"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+version = "1.6.0"
+
+[package.dependencies]
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "rst.linker"]
+testing = ["packaging", "importlib-resources"]
+
 [[package]]
 category = "main"
 description = "Jinxed Terminal Library"
@@ -303,8 +318,20 @@ optional = false
 python-versions = "*"
 version = "0.1.8"
 
+[[package]]
+category = "main"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+name = "zipp"
+optional = false
+python-versions = ">=3.6"
+version = "3.1.0"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+testing = ["jaraco.itertools", "func-timeout"]
+
 [metadata]
-content-hash = "fd95a1de8c202bcfdd879a6d4ad47206212f3afad7e823ba527938a5dfcaeadc"
+content-hash = "ea66303a3dcb7b3b41a3a0e9d189c6d49b57d574ccc152fa83c9225a3ac3f845"
 python-versions = "^3.8"
 
 [metadata.files]
@@ -347,6 +374,10 @@ flake8 = [
     {file = "flake8-3.7.9-py2.py3-none-any.whl", hash = "sha256:49356e766643ad15072a789a20915d3c91dc89fd313ccd71802303fd67e4deca"},
     {file = "flake8-3.7.9.tar.gz", hash = "sha256:45681a117ecc81e870cbf1262835ae4af5e7a8b08e40b944a8a6e6b895914cfb"},
 ]
+importlib-metadata = [
+    {file = "importlib_metadata-1.6.0-py2.py3-none-any.whl", hash = "sha256:2a688cbaa90e0cc587f1df48bdc97a6eadccdcd9c35fb3f976a09e3b5016d90f"},
+    {file = "importlib_metadata-1.6.0.tar.gz", hash = "sha256:34513a8a0c4962bc66d35b359558fd8a5e10cd472d37aec5f66858addef32c1e"},
+]
 jinxed = [
     {file = "jinxed-1.0.0-py2.py3-none-any.whl", hash = "sha256:79ceb7097ba9d905000905173554092e81fe31aebb107b9566a15767dfdc3a82"},
     {file = "jinxed-1.0.0.tar.gz", hash = "sha256:094d0e1c92b8bcf324d1fb4dceaa82cb79e4524790caf524eca0499807a0fbd8"},
@@ -479,3 +510,7 @@ wcwidth = [
     {file = "wcwidth-0.1.8-py2.py3-none-any.whl", hash = "sha256:8fd29383f539be45b20bd4df0dc29c20ba48654a41e661925e612311e9f3c603"},
     {file = "wcwidth-0.1.8.tar.gz", hash = "sha256:f28b3e8a6483e5d49e7f8949ac1a78314e740333ae305b4ba5defd3e74fb37a8"},
 ]
+zipp = [
+    {file = "zipp-3.1.0-py3-none-any.whl", hash = "sha256:aa36550ff0c0b7ef7fa639055d797116ee891440eac1a56f378e2d3179e0320b"},
+    {file = "zipp-3.1.0.tar.gz", hash = "sha256:c599e4d75c98f6798c509911d08a22e6c021d074469042177c8c86fb92eefd96"},
+]
diff --git a/pomme/__init__.py b/pomme/__init__.py
index e69de29..e3f40c3 100644
--- a/pomme/__init__.py
+++ b/pomme/__init__.py
@@ -0,0 +1,3 @@
+from importlib_metadata import version
+
+__version__ = version(__package__)
diff --git a/pomme/hooks.py b/pomme/hooks.py
index c8764b9..fdfe975 100644
--- a/pomme/hooks.py
+++ b/pomme/hooks.py
@@ -10,5 +10,9 @@ class Hooks():
         script_list = self.dirs.hooks_dirs["after"].iterdir()
 
         for script in script_list:
-            if script.is_file():
+            if not os.access(script, os.X_OK):
+                print("{} isn't an executable file".format(script))
+            elif script.is_file():
                 os.system(script)
+            else:
+                print("Recursion is not implemented")
diff --git a/pomme/pomme.py b/pomme/pomme.py
index 1b7933b..8107347 100644
--- a/pomme/pomme.py
+++ b/pomme/pomme.py
@@ -10,6 +10,8 @@ from blessed import Terminal     # type: ignore
 from pomme.timer import Timer
 from pomme.hooks import Hooks
 
+from pomme import __version__
+
 file_path = os.path.dirname(__file__)
 config = toml.load(os.path.join(file_path, "config.toml"))
 
@@ -63,9 +65,16 @@ def print_time(s) -> None:
     s.enter(1, 1, print_time, (s,))
 
 
-@click.group()
-def pomme() -> None:
-    """ main command """
+@click.group(invoke_without_command=True)
+@click.option('-v', '--version', is_flag=True)
+def pomme(version) -> None:
+    """ Pomme timer management system """
+    context = click.get_current_context()
+    if version:
+        print("Pomme version {}".format(__version__))
+        return
+    elif not context.invoked_subcommand:
+        print(context.get_help())
     pass
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 8331ae1..eb333a5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pomme"
-version = "0.1.2"
+version = "0.1.3-alpha.0"
 description = "proof of concept for pomme timer"
 authors = ["koalp <koalp@alpaga.dev>"]
 license = "GPL-3.0-or-later"
@@ -11,6 +11,7 @@ click = "^7.0"
 toml = "^0.10.0"
 blessed = "^1.5"
 pyxdg = "^0.26"
+importlib_metadata = "^1.6.0"
 
 [tool.poetry.dev-dependencies]
 mypy = "^0.761"