def run( cmd )
    # set self.cmd to the passed in param, directly, stripping any '\n. as we do.
    self.cmd = cmd
    @@bash.execute "#{self.cmd}", :stdout => @@stdout, :stderr => @@stderr
    Benchmark.benchmark(CAPTION) do |x|
      # Start and track timing for each individual commands, storing as a Benchmark Tms block.
      self.timings = x.report("Timings: ") do
        # Set cmd_output on self, for later processing, to the returned cmd output.
        #self.cmd_output = %x[ #{self.cmd} 2>&1 ]
      end
      self.cmd_output = @@stdout.string.strip!
      puts "#{self.cmd_output}"

    end