Merge pull request #23917 from chashmeetsingh/patch-1

Create tmp folder if not present

railties/lib/rails/tasks/dev.rake

 namespace :dev do
   desc 'Toggle development mode caching on/off'
   task :cache do
+    FileUtils.mkdir_p('tmp')
+  
     if File.exist? 'tmp/caching-dev.txt'
       File.delete 'tmp/caching-dev.txt'
       puts 'Development mode is no longer being cached.'
@@ -8,7 +10,7 @@ namespace :dev do
       FileUtils.touch 'tmp/caching-dev.txt'
       puts 'Development mode is now being cached.'
     end
-
+    
     FileUtils.touch 'tmp/restart.txt'
   end
 end