docs: def do_run(self,args):
          """SSH to each instance in turn and run specified command"""
          parser = CommandArgumentParser("run")
          parser.add_argument('-R','--replace-key',dest='replaceKey',default=False,action='store_true',help="Replace the host's key. This is useful when AWS recycles an IP address you've seen before.")
          parser.add_argument('-Y','--keyscan',dest='keyscan',default=False,action='store_true',help="Perform a keyscan to avoid having to say 'yes' for a new host. Implies -R.")
          parser.add_argument('-ii','--ignore-host-key',dest='ignore-host-key',default=False,action='store_true',help='Ignore host key')
          parser.add_argument('-ne','--no-echo',dest='no-echo',default=False,action='store_true',help='Do not echo command')
          parser.add_argument(dest='command',nargs='+',help="Command to run on all hosts.") # consider adding a filter option later
          parser.add_argument('-v',dest='verbosity',default=0,action=VAction,nargs='?',help='Verbosity. The more instances, the more verbose');        
          parser.add_argument('-j',dest='jobs',type=int,default=1,help='Number of hosts to contact in parallel');
          parser.add_argument('-s',dest='skip',type=int,default=0,help='Skip this many hosts');
          parser.add_argument('-m',dest='macro',default=False,action='store_true',help='{command} is a series of macros to execute, not the actual command to run on the host');
          args = vars(parser.parse_args(args))
  
          replaceKey = args['replaceKey']
          keyscan = args['keyscan']
          verbosity = args['verbosity']
          jobs = args['jobs']
          skip = args['skip']
          ignoreHostKey = args['ignore-host-key']
          noEcho = args['no-echo']
  
          instances = self.scalingGroupDescription['AutoScalingGroups'][0]['Instances']
          instances = instances[skip:]
          # if replaceKey or keyscan:
          #     for instance in instances:
          #         stdplus.resetKnownHost(instance)
  
          if args['macro']:
              if len(args['command']) > 1:
                  print("Only one macro may be specified with the -m switch.")
                  return
              else:
                  macro = args['command'][0]
                  print("Macro:{}".format(macro))
                  command = Config.config['ssh-macros'][macro]
          else:
              command = ' '.join(args['command'])
              
          Parallel(n_jobs=jobs)(
              delayed(ssh)(instance['InstanceId'],0,[],replaceKey,keyscan,False,verbosity,command,ignoreHostKey=ignoreHostKey,echoCommand=not noEcho,name="{}:{}: ".format(instance['index'],instance['InstanceId'])) for instance in instances
          )