diff --git a/cli/src/main/java/org/onlab/onos/cli/GreetCommand.java b/cli/src/main/java/org/onlab/onos/cli/GreetCommand.java
new file mode 100644
index 0000000..dd8ae81
--- /dev/null
+++ b/cli/src/main/java/org/onlab/onos/cli/GreetCommand.java
@@ -0,0 +1,24 @@
+package org.onlab.onos.cli;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.console.OsgiCommandSupport;
+import org.onlab.onos.net.GreetService;
+
+/**
+ * Simple command example to demonstrate use of Karaf shell extensions; shows
+ * use of an optional parameter as well.
+ */
+@Command(scope = "onos", name = "greet", description = "Issues a greeting")
+public class GreetCommand extends OsgiCommandSupport {
+
+    @Argument(index = 0, name = "name", description = "Name to greet",
+              required = false, multiValued = false)
+    String name = "dude";
+
+    @Override
+    protected Object doExecute() throws Exception {
+        System.out.println(getService(GreetService.class).yo(name));
+        return null;
+    }
+}