--- /dev/null
+#!/usr/bin/env node
+
+var path = require('path');
+var uuid = require(path.join(__dirname, '..'));
+
+var arg = process.argv[2];
+
+if ('--help' === arg) {
+ console.log('\n USAGE: uuid [version] [options]\n\n');
+ console.log(' options:\n');
+ console.log(' --help Display this message and exit\n');
+ process.exit(0);
+}
+
+if (null == arg) {
+ console.log(uuid());
+ process.exit(0);
+}
+
+if ('v1' !== arg && 'v4' !== arg) {
+ console.error('Version must be RFC4122 version 1 or version 4, denoted as "v1" or "v4"');
+ process.exit(1);
+}
+
+console.log(uuid[arg]());
+process.exit(0);