code: def sshagent_run(cmd):
      
      # Handle context manager modifications
      wrapped_cmd = _prefix_commands(_prefix_env_vars(cmd), 'remote')
      try:
          host, port = env.host_string.split(':')
          return local(
              u"ssh -p %s -A -o StrictHostKeyChecking=no %s@%s '%s'" % (
                  port, env.user, host, wrapped_cmd
              )
          )
      except ValueError:
          return local(
              u"ssh -A -o StrictHostKeyChecking=no %s@%s '%s'" % (
                  env.user, env.host_string, wrapped_cmd
              )
          )
docs: Helper function.
      Runs a command with SSH agent forwarding enabled.
  
      Note:: Fabric (and paramiko) can't forward your SSH agent.
      This helper uses your system's ssh to do so.