No error occurred.

没有发生错误。

youdao

If the variable is set, set — query returns a status code of 0, indicating that no error occurred; otherwise, it returns a 1.

如果已经设置了此变量，set——query返回状态码0，这表示没有出现错误；否则，返回1。

youdao

The new process created by spawn will continue to execute until it terminates, either normally (that is, with no error) or abnormally (some fault occurred).

spawn创建的新进程将在终止之前继续执行，可能正常终止(即无错误)，也可能非正常终止(即发生了某些错误)。

youdao