docs: def run_script(config, output_dir, accounts, tags, region, echo, serial, script_args):
      """run an aws script across accounts"""
      # TODO count up on success / error / error list by account
      accounts_config, custodian_config, executor = init(
          config, None, serial, True, accounts, tags, (), ())
  
      if echo:
          print("command to run: `%s`" % (" ".join(script_args)))
          return
  
      # Support fully quoted scripts, which are common to avoid parameter
      # overlap with c7n-org run-script.
      if len(script_args) == 1 and " " in script_args[0]:
          script_args = script_args[0].split()
  
      with executor(max_workers=WORKER_COUNT) as w:
          futures = {}
          for a in accounts_config.get('accounts', ()):
              for r in resolve_regions(region or a.get('regions', ())):
                  futures[
                      w.submit(run_account_script, a, r, output_dir,
                               serial, script_args)] = (a, r)
          for f in as_completed(futures):
              a, r = futures[f]
              if f.exception():
                  if serial:
                      raise
                  log.warning(
                      "Error running script in %s @ %s exception: %s",
                      a['name'], r, f.exception())
              exit_code = f.result()
              if exit_code == 0:
                  log.info(
                      "ran script on account:%s region:%s script: `%s`",
                      a['name'], r, " ".join(script_args))
              else:
                  log.info(
                      "error running script on account:%s region:%s script: `%s`",
                      a['name'], r, " ".join(script_args))