diff --git a/bin/cli_auth_once.php b/bin/cli_auth_once.php
new file mode 100755
index 0000000..db25f21
--- /dev/null
+++ b/bin/cli_auth_once.php
@@ -0,0 +1,92 @@
+<?php
+
+$argDefs = [
+	[
+		'name' => 'refreshTokenFile',
+		'keys' => [
+			'r',
+			'refresh-token',
+		],
+		'default' => '',
+	],
+	[
+		'name' => 'email',
+		'keys' => [
+			'email',
+			'e'
+		],
+		'default' => ''
+	],
+	[
+		'name' => 'password',
+		'keys' => [
+			'password',
+			'p'
+		],
+		'default' => ''
+	]
+];
+$h = getenv('HOME');
+if ($h) {
+	$argDefs[0]['default'] = $h.'/.cache/hwp/refresh-token.txt';
+}
+
+$defaults = [
+	'OAUTH2_LOGIN_URL'         => 'https://accounts.google.com/o/oauth2/programmatic_auth',
+	'OAUTH2_TOKEN_REQUEST_URL' => 'https://accounts.google.com/o/oauth2/token',
+	'OAUTH2_CLIENT_SECRET'     => 'KWsJlkaMn1jGLxQpWxMnOox-',
+	//'OAUTH2_LOGIN_URL' => 'https://accounts.google.com/o/oauth2/v2/auth',
+	'OAUTH2_SCOPES'            => [
+		'https://www.googleapis.com/auth/userinfo.email',
+		'https://www.google.com/accounts/OAuthLogin',
+	],
+	'OAUTH2_CLIENT_ID' => '936475272427.apps.googleusercontent.com',
+
+];
+$o = [
+	'password:',
+	'email:',
+	'refresh-token:',
+];
+$options = getopt('p:e:r:', $o);
+$config = array_merge($defaults);
+
+foreach ($argDefs as $arg) {
+	foreach ($options as $k => $v) {
+		if (array_key_exists('default', $arg)) {
+			$config[ $arg['name'] ] = $arg['default'];
+		} else {
+			$config[ $arg['name'] ] = NULL;
+		}
+		if (in_array($k, $arg['keys'])) {
+			$config[ $arg['name'] ] = $v;
+			continue 2;
+		}
+	}
+}
+
+include('vendor/autoload.php');
+$session = new Requests_Session();
+
+include('src/Client.php');
+try {
+	$client = new HWP\Client($session, $config);
+	$authCode  = $client->getAuthCode();
+	$tokenJson = $client->getTokensFromCode($authCode);
+	$client->saveRefreshToken($tokenJson['refresh_token']);
+
+} catch (Exception $e) {
+	echo "Error: ".$e->getMessage()."\n";
+	die(1);
+}
+
+
+
+function helpText() {
+	echo "php ./bin/cli_auth_once.php [-e|--email youremail] [-p|--password \"pAssw0rd#\"] \n";
+	echo "Authenticate to Google and store a long term refresh token.\n";
+	echo "Parmeters:\n";
+	echo "  -r --refresh-token:     The filename to use as refresh token cache.\n";
+	echo "  -e --email:             Email for sign-in.\n";
+	echo "  -p --password:          Password for sign-in.\n";
+}