Index: src/main/java/org/apache/felix/karaf/gshell/osgi/UpdateBundle.java
===================================================================
--- src/main/java/org/apache/felix/karaf/gshell/osgi/UpdateBundle.java	(revision 785560)
+++ src/main/java/org/apache/felix/karaf/gshell/osgi/UpdateBundle.java	(working copy)
@@ -1,39 +1,48 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.felix.karaf.gshell.osgi;
-
-import java.io.InputStream;
-import java.net.URL;
-
-import org.apache.geronimo.gshell.clp.Argument;
-import org.osgi.framework.Bundle;
-
-public class UpdateBundle extends BundleCommand {
-
-	@Argument(required = false, description = "Bundle location", index=1)
-	String location;
-
-	protected void doExecute(Bundle bundle) throws Exception {
-		if (location != null) {
-			InputStream is = new URL(location).openStream();
-			bundle.update(is);
-		} else {
-			bundle.update();
-		}
-	}
-
-}
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.gshell.osgi;
+
+import java.io.InputStream;
+import java.net.URL;
+import java.util.List;
+
+import org.apache.geronimo.gshell.clp.Argument;
+import org.osgi.framework.Bundle;
+
+public class UpdateBundle extends BundlesCommand {
+
+	@Argument(required = false, description = "Bundle location", index=1)
+	String location;
+
+	protected void doExecute(Bundle bundle) throws Exception {
+		if (location != null) {
+			InputStream is = new URL(location).openStream();
+			bundle.update(is);
+		} else {
+			bundle.update();
+		}
+	}
+
+	@Override
+	protected void doExecute(List<Bundle> bundles) throws Exception {
+        for (Bundle bundle : bundles) {
+            bundle.update();
+        }
+		
+	}
+
+}