diff --git a/utils/listFile.js b/utils/listFile.js
new file mode 100644
index 0000000..b0ab224
--- /dev/null
+++ b/utils/listFile.js
@@ -0,0 +1,13 @@
+// These functions just return paths.
+
+var list = 'etc/up-serve/servers.up';
+
+function list(domain, inPort, outPort) {
+    if (inPort) {
+        return (list + '  ' + domain + ':' + outPort + '  ' + 'proxy' + '  ' + inPort);
+    } else {
+        return (list + '  ' + domain + ':' + outPort + '  ' + 'static');
+    }
+}
+
+module.exports = listFile;
\ No newline at end of file