Added a command line notification platform that could be used for all kind of custom notifications

homeassistant/components/notify/command_line.py

@@ -0,0 +1,46 @@
+"""
+homeassistant.components.notify.command_line
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+command_line notification service.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/notify.command_line/
+"""
+import logging
+import subprocess
+import shlex
+from homeassistant.helpers import validate_config
+from homeassistant.components.notify import (
+    DOMAIN, BaseNotificationService)
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def get_service(hass, config):
+    """ Get the Command Line notification service. """
+
+    if not validate_config({DOMAIN: config},
+                           {DOMAIN: ['command']},
+                           _LOGGER):
+        return None
+
+    command = config['command']
+
+    return CommandLineNotificationService(command)
+
+
+# pylint: disable=too-few-public-methods
+class CommandLineNotificationService(BaseNotificationService):
+    """ Implements notification service for the Command Line service. """
+
+    def __init__(self, command):
+        self.command = command
+
+    def send_message(self, message="", **kwargs):
+        """ Send a message to a command_line. """
+        try:
+            subprocess.call("{} \"{}\"".format(self.command,
+                                               shlex.quote(message)),
+                            shell=True)
+        except subprocess.CalledProcessError:
+            _LOGGER.error('Command failed: %s', self.command)