Allow pipes in command sensors and services

homeassistant/components/sensor/command_sensor.py

@@ -98,7 +98,7 @@ class CommandSensorData(object):
         _LOGGER.info('Running command: %s', self.command)
 
         try:
-            return_value = subprocess.check_output(self.command.split())
+            return_value = subprocess.check_output(self.command, shell=True)
             self.value = return_value.strip().decode('utf-8')
         except subprocess.CalledProcessError:
             _LOGGER.error('Command failed: %s', self.command)

homeassistant/components/shell_command.py

@@ -34,7 +34,7 @@ def setup(hass, config):
     def service_handler(call):
         """ Execute a shell command service. """
         try:
-            subprocess.call(conf[call.service].split(' '),
+            subprocess.call(conf[call.service], shell=True,
                             stdout=subprocess.DEVNULL,
                             stderr=subprocess.DEVNULL)
         except subprocess.SubprocessError:

tests/components/test_shell_command.py

@@ -30,7 +30,7 @@ class TestShellCommand(unittest.TestCase):
             path = os.path.join(tempdirname, 'called.txt')
             self.assertTrue(shell_command.setup(self.hass, {
                 'shell_command': {
-                    'test_service': "touch {}".format(path)
+                    'test_service': "date > {}".format(path)
                 }
             }))