remove tmp file rake task/

lib/tasks/rubyzip.rake

@@ -1,12 +1,26 @@
 desc "nyan ruby zip operation"
 task :zip do
-	puts "will building zip tmp files sweeper."
+	puts "input rake zip:clean_tmp will removed tmp/*.zip ."
 end
 
 namespace :zip do
 	desc "ruby zip sweeper"
-	task :rubyzip_clean do
-		puts "ruby zip sweeping..."
+	task :clean_tmp do
+    unless File.exist?(Dir.pwd+"/tmp/archiveZip")
+      puts "tmp/archiveZip folder is not exist. "
+      next
+    end
+
+    puts "ruby zip sweeping..."
+    Dir.chdir('tmp/archiveZip') do
+      Dir['*'].select do |file|
+        if file =~ /archive_\d+\.zip/
+          File.delete(file)
+          puts "#{file} is deleted."
+        end
+      end
+    end
+		puts "ruby zip sweeping is done."
 	end
 end