Rewrite Symfony v2 Commands.

Mage/Task/BuiltIn/Symfony2/CacheClear.php

@@ -6,12 +6,15 @@ class Mage_Task_BuiltIn_Symfony2_CacheClear
     {
         return 'Symfony v2 - Cache Clear [built-in]';
     }
-        
+
     public function run()
     {
-        $command = 'app/console cache:clear';
+    	// Options
+    	$env = $this->getParameter('env', 'dev');
+
+        $command = 'app/console cache:clear --env=' . $env;
         $result = $this->_runLocalCommand($command);
-        
+
         return $result;
     }
 }