code: static DefaultExecuteResultHandler execute(CommandLine cmdLine, OutputStream out, OutputStream err)
              throws ExecuteException, IOException {
          return execute(cmdLine, Collections.<String, String> emptyMap(), out, err);
      }
docs: Executes a PBS command.
  
  @param cmdLine command
  @param out output stream
  @param err err stream
  @return execute handler
  @throws ExecuteException
  @throws IOException