diff --git a/cyberwow/lib/controller/syncing.dart b/cyberwow/lib/controller/syncing.dart
index c3b1513..a1d7956 100644
--- a/cyberwow/lib/controller/syncing.dart
+++ b/cyberwow/lib/controller/syncing.dart
@@ -54,16 +54,25 @@ Stream<String> runBinary (String name, {Stream<String> input}) async* {
   [
     "--data-dir",
     binDir.path,
-    "--non-interactive",
   ] + extraArgs + config.c.extraArgs;
 
   log.info('args: ' + args.toString());
 
   final outputProcess = await Process.start(newPath, args);
+
+  Future<void> printInput() async {
+    await for (final line in input) {
+      log.finest('process input: ' + line);
+      outputProcess.stdin.writeln(line);
+      outputProcess.stdin.flush();
+    }
+  }
+
   if (input != null) {
-    outputProcess.stdin.addStream(input.transform(utf8.encoder));
+    printInput();
   }
   await for (final line in outputProcess.stdout.transform(utf8.decoder)) {
+    log.finest('process output: ' + line);
     yield line;
   }
 
diff --git a/cyberwow/lib/state.dart b/cyberwow/lib/state.dart
index 359aa59..fde28ed 100644
--- a/cyberwow/lib/state.dart
+++ b/cyberwow/lib/state.dart
@@ -190,6 +190,8 @@ class SyncingState extends HookedState {
 
     log.fine('syncing: loop exit');
 
+    // processInput.add('exit');
+
     final _height = await rpc.height();
     SyncedState _next = SyncedState(setState, getNotification, stdout, processInput, processOutput);
     _next.height = _height;
@@ -211,6 +213,11 @@ class SyncedState extends HookedState {
 
   SyncedState(f, s, this.stdout, this.processInput, this.processOutput) : super (f, s);
 
+  void appendInput(String line) {
+    stdout.addLast('> ' + line + '\n');
+    processInput.add(line);
+  }
+
   Future<ReSyncingState> next() async {
     log.fine("Synced next");
 
@@ -241,7 +248,7 @@ class SyncedState extends HookedState {
 
         getTransactionPool = await rpc.getTransactionPoolSimple();
 
-        // processInput.add('help\n');
+        // appendInput('help');
 
         // log.fine('getTransactionPool: $getTransactionPool');
         syncState();