code: def _run_raw(self, cmd, ignore_errors=False):
      
      # TODO: capture stdout/stderr for feature parity with aws_backend
      result = os.system(cmd)
      if result != 0:
        if ignore_errors:
          self.log(f"command ({cmd}) failed.")
          assert False, "_run_raw failed"
docs: Runs command directly, skipping tmux interface