diff --git a/bin/rgb.js b/bin/rgb.js
new file mode 100644
index 0000000..88afa6a
--- /dev/null
+++ b/bin/rgb.js
@@ -0,0 +1,11 @@
+#!/usr/bin/env node
+var color = require('../index.js');
+
+var firstArg = function(fn, context) {
+    return function() {
+        var args = Array.prototype.slice.call(arguments);
+        return fn.call(context, args.length ? args[0] : null);
+    };
+}
+
+process.argv.slice(2).map(firstArg(color)).forEach(firstArg(console.log));
\ No newline at end of file
diff --git a/index.js b/index.js
old mode 100644
new mode 100755
diff --git a/package.json b/package.json
index a98ca5f..2eb9096 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,9 @@
   "version": "0.0.1",
   "description": "converts all sorts of colors to rgb format.",
   "main": "index.js",
+  "bin": {
+    "rgb": "bin/rgb.js"
+  },
   "repository": {
     "type": "git",
     "url": "https://github.com/kamicane/rgb"