From 0de2ead0e91f28ffec2bddd60dec24c0db75b275 Mon Sep 17 00:00:00 2001
From: Shannon Booth <shannon.ml.booth@gmail.com>
Date: Mon, 9 Mar 2020 20:06:38 +1300
Subject: [PATCH] Shell: Validate only one directory is given to cd

---
 Shell/main.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Shell/main.cpp b/Shell/main.cpp
index ebfc0eba8b..5e8877a563 100644
--- a/Shell/main.cpp
+++ b/Shell/main.cpp
@@ -187,6 +187,11 @@ static String expand_tilde(const char* expression)
 
 static int sh_cd(int argc, const char** argv)
 {
+    if (argc > 2) {
+        fprintf(stderr, "cd: too many arguments\n");
+        return 1;
+    }
+
     String new_path;
 
     if (argc == 1) {