diff --git a/res/bin/ndn b/res/bin/ndn
new file mode 100755
index 0000000..1ced1b6
--- /dev/null
+++ b/res/bin/ndn
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+function usage() {
+    echo
+    echo Available commands:
+    for command in $(ls /Applications/NDN.app/Contents/Helpers/ 2>/dev/null); do
+        echo "  $command"
+    done
+    for command in $(ls /Applications/NDN.app/Contents/Resources/bin/ 2>/dev/null); do
+        echo "  $command"
+    done
+}
+
+if [[ $# -eq 0 ]]; then
+    echo ERROR: No command is specified
+    usage
+    exit 1
+fi
+
+if [[ -f /Applications/NDN.app/Contents/Helpers/"$1" ]]; then
+    /Applications/NDN.app/Contents/Helpers/"$@"
+elif [[ -f /Applications/NDN.app/Contents/Resources/bin/"$1" ]]; then
+    /Applications/NDN.app/Contents/Resources/bin/"$@"
+else
+    echo ERROR: Unknown is specified
+    usage
+    exit 1
+fi