Handle exit codes

Author: quicksnap

lib/exec.js

@@ -15,8 +15,11 @@ module.exports = function exec(script) {
 	});
 
 	console.log('to be executed:' + command_line);
-	var command = child_exec(command_line);
-
+	var command = child_exec(command_line, function (error, stdout, stderr) {
+		if (error) {
+			process.exit(error.code || 1);
+		}
+	});
 	command.stdout.on('data', function(data) {
 	  process.stdout.write(data);
 	});
@@ -25,6 +28,7 @@ module.exports = function exec(script) {
 	});
 	command.on('error', function(err) {
 	  process.stderr.write(err);
+	  process.exit(err.code || 1);
 	});
 
-}
+}