validate

# File railties/lib/rails/mongrel_server/commands.rb, line 292
      def validate
        @cwd = File.expand_path(@cwd)
        valid_dir? @cwd, "Invalid path to change to during daemon mode: #@cwd"

        Dir.chdir @cwd

        valid_exists? @pid_file, "PID file #@pid_file does not exist.  Not running?"
        return @valid
      end