diff --git a/cmd/bulb/main.ha b/cmd/bulb/main.ha
index 34f66c2..a4ba064 100644
--- a/cmd/bulb/main.ha
+++ b/cmd/bulb/main.ha
@@ -60,7 +60,28 @@ fn subcmd_post(cmd: *getopt::command) void = {
 		};
 	};
 
-	// TODO
+	let location = match(look_up_board(board)) {
+	case let location: str =>
+		yield location;
+	case void =>
+		fmt::errorf("{}: The board {} does not exist", name, board)!;
+		return;
+	};
+	
+	let file = match(os::open(location, fs::flag::APPEND)) {
+	case let file: io::file =>
+		defer io::close(file);
+		yield file;
+	case let err: fs::error =>
+		fmt::errorf(
+			"{}: Can't make post: {}",
+			name, fs::strerror(err));
+		return;
+	};
+
+	let user = 
+	
+	fmt::fprintf(file, "{}: {}", user, message)!;
 };
 
 fn subcmd_read(cmd: *getopt::command) (void | errors::invalid) = {
@@ -86,7 +107,7 @@ fn subcmd_ls(cmd: *getopt::command) void = {
 	for (let directory .. path) {
 		match (list_boards_in(directory)) {
 		case let err: fs::error =>
-			fmt::errorf (
+			fmt::errorf(
 				"{}: Can't list boards in {}: {}\n",
 				name,
 				directory,