diff --git a/Classes/Command/BackendApiCommandController.php b/Classes/Command/BackendApiCommandController.php
index 31e32e3..4665bdc 100644
--- a/Classes/Command/BackendApiCommandController.php
+++ b/Classes/Command/BackendApiCommandController.php
@@ -82,6 +82,7 @@ public function lockCommand($redirectUrl = NULL) {
 			$this->outputLine($message);
 			$this->logger->info($message);
 		}
+		$this->quit(0);
 	}
 
 	/**
@@ -99,6 +100,7 @@ public function unlockCommand() {
 				$message = 'Removed lock file \'typo3conf/LOCK_BACKEND\'';
 				$this->outputLine($message);
 				$this->logger->info($message);
+				$this->quit(0);
 			}
 		} else {
 			$message = 'No lock file \'typo3conf/LOCK_BACKEND\' was found, hence no lock could be removed.';
@@ -107,4 +109,4 @@ public function unlockCommand() {
 			$this->quit(1);
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/Classes/Command/CacheApiCommandController.php b/Classes/Command/CacheApiCommandController.php
index 5ffa7b7..3679c91 100644
--- a/Classes/Command/CacheApiCommandController.php
+++ b/Classes/Command/CacheApiCommandController.php
@@ -86,6 +86,7 @@ public function clearAllCachesCommand($hard = false) {
 		$message = 'All caches have been cleared%s.';
 		$this->logger->info($message);
 		$this->outputLine($message, $hard ? array(' hard') : array(''));
+		$this->quit(0);
 	}
 
 	/**
@@ -103,6 +104,7 @@ public function assureCacheDirectoryIsWriteableCommand() {
 			$this->logger->info($message);
 			$this->outputLine($message);
 		}
+		$this->quit(0);
 	}
 
 	/**
@@ -115,13 +117,14 @@ public function clearSystemCacheCommand() {
 		$message = 'System cache has been cleared';
 		$this->logger->info($message);
 		$this->outputLine($message);
+		$this->quit(0);
 	}
 
 	/**
 	 * Clears the opcode cache.
 	 *
 	 * @param string|NULL $fileAbsPath The file as absolute path to be cleared
-	 *                                 or NULL to clear completely.
+	 *								 or NULL to clear completely.
 	 *
 	 * @return void
 	 */
@@ -137,6 +140,7 @@ public function clearAllActiveOpcodeCacheCommand($fileAbsPath = NULL) {
 			$this->outputLine($message);
 			$this->logger->info($message);
 		}
+		$this->quit(0);
 	}
 
 	/**
@@ -149,6 +153,7 @@ public function clearConfigurationCacheCommand() {
 		$message = 'Configuration cache has been cleared.';
 		$this->logger->info($message);
 		$this->outputLine($message);
+		$this->quit(0);
 	}
 
 	/**
@@ -161,6 +166,7 @@ public function clearPageCacheCommand() {
 		$message = 'Page cache has been cleared.';
 		$this->logger->info($message);
 		$this->outputLine($message);
+		$this->quit(0);
 	}
 
 	/**
@@ -174,5 +180,6 @@ public function clearAllExceptPageCacheCommand() {
 		$message = 'Cleared caches: ' . implode(', ', $clearedCaches);
 		$this->logger->info($message);
 		$this->outputLine($message);
+		$this->quit(0);
 	}
 }
diff --git a/Classes/Command/ConfigurationApiCommandController.php b/Classes/Command/ConfigurationApiCommandController.php
index d0b1d44..0942501 100644
--- a/Classes/Command/ConfigurationApiCommandController.php
+++ b/Classes/Command/ConfigurationApiCommandController.php
@@ -47,6 +47,7 @@ class ConfigurationApiCommandController extends CommandController {
 	 */
 	public function listCommand() {
 		$this->outputLine(json_encode($this->configurationApiService->getConfigurationArray()));
+		$this->quit(0);
 	}
 
 	/**
@@ -57,5 +58,6 @@ public function listCommand() {
 	 */
 	public function showCommand($key) {
 		$this->outputLine(json_encode($this->configurationApiService->getValue($key)));
+		$this->quit(0);
 	}
 }
diff --git a/Classes/Command/DatabaseApiCommandController.php b/Classes/Command/DatabaseApiCommandController.php
index 2e00025..42ad7e5 100644
--- a/Classes/Command/DatabaseApiCommandController.php
+++ b/Classes/Command/DatabaseApiCommandController.php
@@ -90,7 +90,7 @@ public function databaseCompareCommand($actions = '', $dry = FALSE) {
 			foreach ($actions as $number => $action) {
 				$this->outputLine('  - ' . $action . ' => ' . $number);
 			}
-			$this->quit();
+			$this->quit(0);
 		}
 
 		$result = $this->databaseApiService->databaseCompare($actions, $dry);
@@ -109,11 +109,13 @@ public function databaseCompareCommand($actions = '', $dry = FALSE) {
 				$this->outputLine(LF);
 			}
 			$this->logger->info('DB compare executed in dry mode');
+			$this->quit(0);
 		} else {
 			if (empty($result)) {
 				$message = 'DB has been compared';
 				$this->outputLine($message);
 				$this->logger->info($message);
+				$this->quit(0);
 			} else {
 				$message = vsprintf('DB could not be compared, Error(s): %s', array(LF . implode(LF, $result)));
 				$this->outputLine($message);
@@ -122,4 +124,4 @@ public function databaseCompareCommand($actions = '', $dry = FALSE) {
 			}
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/Classes/Command/ExtensionApiCommandController.php b/Classes/Command/ExtensionApiCommandController.php
index eef767b..3506d23 100755
--- a/Classes/Command/ExtensionApiCommandController.php
+++ b/Classes/Command/ExtensionApiCommandController.php
@@ -141,6 +141,7 @@ public function infoCommand($key) {
 		}
 
 		$this->logger->info('extensionApi:info executes successfully.');
+        $this->quit(0);
 	}
 
 	/**
@@ -173,6 +174,7 @@ public function listInstalledCommand($type = '') {
 		$this->outputLine('%-2s%-40s', array(' ', str_repeat('-', $this->output->getMaximumLineLength() - 3)));
 		$this->outputLine('  Total: ' . count($extensions) . ' extensions');
 		$this->logger->info('extensionApi:listInstalled executed successfully');
+        $this->quit(0);
 	}
 
 	/**
@@ -193,6 +195,7 @@ public function updateListCommand() {
 			$this->outputLine($message);
 			$this->logger->info($message);
 		}
+        $this->quit(0);
 	}
 
 	/**
@@ -216,6 +219,7 @@ public function installCommand($key) {
 		$message = sprintf('Extension "%s" is now installed!', $key);
 		$this->outputLine($message);
 		$this->logger->info($message);
+        $this->quit(0);
 	}
 
 	/**
@@ -238,6 +242,7 @@ public function uninstallCommand($key) {
 		$message = sprintf('Extension "%s" is now uninstalled!', $key);
 		$this->outputLine($message);
 		$this->logger->info($message);
+        $this->quit(0);
 	}
 
 	/**
@@ -300,6 +305,7 @@ public function configureCommand($key, $configFile = '', $settings = '') {
 		$message = sprintf('Extension "%s" has been configured!', $key);
 		$this->outputLine($message);
 		$this->logger->info($message);
+        $this->quit(0);
 	}
 
 	/**
@@ -319,6 +325,7 @@ public function fetchCommand($key, $version = '', $location = 'Local', $overwrit
 			$message = sprintf('Extension "%s" version %s has been fetched from repository! Dependencies were not resolved.', $data['main']['extKey'], $data['main']['version']);
 			$this->outputLine($message);
 			$this->logger->info($message);
+            $this->quit(0);
 		} catch (Exception $e) {
 			$message = $e->getMessage();
 			$this->outputLine($message);
@@ -347,6 +354,7 @@ public function listMirrorsCommand() {
 			$this->quit(1);
 		}
 		$this->logger->info('extensionApi:listMirrors executed successfully.');
+        $this->quit(0);
 	}
 
 	/**
@@ -364,6 +372,7 @@ public function importCommand($file, $location = 'Local', $overwrite = FALSE) {
 			$message = sprintf('Extension "%s" has been imported!', $data['extKey']);
 			$this->outputLine($message);
 			$this->logger->info($message);
+			$this->quit(0);
 		} catch (Exception $e) {
 			$this->outputLine($e->getMessage());
 			$this->logger->error($e->getMessage());
diff --git a/Classes/Command/ImportExportApiCommandController.php b/Classes/Command/ImportExportApiCommandController.php
index 2fdfde5..1a93bd2 100755
--- a/Classes/Command/ImportExportApiCommandController.php
+++ b/Classes/Command/ImportExportApiCommandController.php
@@ -57,5 +57,6 @@ public function importCommand($pid, $fileName, $update = FALSE) {
 		foreach ($messages AS $message) {
 			$this->outputLine($message);
 		}
+		$this->quit(0);
 	}
-}
\ No newline at end of file
+}
diff --git a/Classes/Command/SiteApiCommandController.php b/Classes/Command/SiteApiCommandController.php
index 74e6b72..ee4358c 100644
--- a/Classes/Command/SiteApiCommandController.php
+++ b/Classes/Command/SiteApiCommandController.php
@@ -94,6 +94,7 @@ public function infoCommand() {
 		}
 
 		$this->logger->info('siteApi:info executes successfully.');
+		$this->quit(0);
 	}
 
 	/**
@@ -120,5 +121,6 @@ public function createSysNewsCommand($header, $text = '') {
 			$this->outputLine('News entry NOT created.');
 			$this->quit(1);
 		}
+		$this->quit(0);
 	}
 }