vendor/rails/railties/lib/tasks/log.rake

   1 namespace :log do
   2   desc "Truncates all *.log files in log/ to zero bytes"
   3   task :clear do
   4     FileList["log/*.log"].each do |log_file|
   5       f = File.open(log_file, "w")
   6       f.close
   7     end
   8   end
   9 end