From 8920ece8f6cb1458295953cd74357c384ee145e1 Mon Sep 17 00:00:00 2001
From: MinusGix <MinusGix@gmail.com>
Date: Mon, 9 Sep 2019 16:48:04 -0500
Subject: [PATCH] Shell: Add support for special parameter that returns PID

---
 Shell/main.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Shell/main.cpp b/Shell/main.cpp
index 1ee0003b55..1891614a7f 100644
--- a/Shell/main.cpp
+++ b/Shell/main.cpp
@@ -309,6 +309,8 @@ static Vector<String> expand_parameters(const StringView& param)
     String variable_name = String(param.substring_view(1, param.length() - 1));
     if (variable_name == "?")
         return { String::number(g.last_return_code) };
+    else if (variable_name == "$")
+        return { String::number(getpid()) };
 
     char* env_value = getenv(variable_name.characters());
     if (env_value == nullptr)