diff --git a/Library/Homebrew/install.rb b/Library/Homebrew/install.rb
index 72fb2a1fa7..3b06cf8bc2 100755
--- a/Library/Homebrew/install.rb
+++ b/Library/Homebrew/install.rb
@@ -50,6 +50,19 @@ def install f
 
   raise "Nothing was installed to #{f.prefix}" unless f.installed?
 
+  # warn the user if stuff was installed outside of their PATH
+  paths = ENV['PATH'].split(':').collect{|p| File.expand_path p}
+  [f.bin, f.sbin].each do |bin|
+    if bin.directory?
+      rootbin = (HOMEBREW_PREFIX+bin.basename).to_s
+      bin = File.expand_path bin
+      unless paths.include? rootbin
+        opoo "#{rootbin} is not in your PATH"
+        puts "You can amend this by altering your ~/.bashrc file"
+      end
+    end
+  end
+
   begin
     Keg.new(f.prefix).link
   rescue Exception