findstr 退出 codes/errorlevel

Question

我有一个使用 findstr 的程序，当找到字符串时 errorlevel returns 0 当找不到字符串时 errorlevel returns 1。好的，没关系，我可以处理。

问题在于我找不到任何关于每个 errorlevel 对 findstr 意味着什么的官方文档。我需要知道 findstr 的其他任何东西是否可以 return 一个 1 的 errorlevel，或者是否只有 returns 1 当找不到字符串。

首选 'official' 文档链接（如果有的话），但我们将不胜感激。

提前致谢！

Answer 1

在 Dos 6.22 帮助中找到了 FIND 命令。

│FIND exit codes
│
│The following list shows each exit code and a brief description of its
│meaning:
│
│0
│    The search was completed successfully and at least one match was found.
│
│1
│    The search was completed successfully, but no matches were found.
│
│2
│    The search was not completed successfully. In this case, an error
│    occurred during the search, and FIND cannot report whether any matches
│    were found.
│
│You can use the ERRORLEVEL parameter on the <If> command line in a batch
│program to process exit codes returned by FIND.

Answer 2

http://ss64.com/nt/findstr.html 说：

FINDSTR will set %ERRORLEVEL% as follows:

0 (False) a match is found in at least one line of at least one file.
1 (True) if a match is not found in any line of any file, (or if the file is not found at all).
2 Wrong syntax 
An invalid switch will only print an error message in error stream.

findstr 退出 codes/errorlevel

findstr exit codes/errorlevel

cmd

exit-code

errorlevel

findstr