如何在cmd.exe的命令行参数中包含goto标签？ [英] How do you include a goto label in a command line parameters for cmd.exe ?

问题描述

有人知道如何在传递给cmd.exe的命令字符串中包含goto label？

Does anyone know how can you include goto label in the command string passed to cmd.exe ?

有这样的情况：

cmd.exe /c ":retry & copy /y new_file.exe file.exe & if [%errorlevel%]==[1] goto :retry" 

推荐答案

一个无限循环，并有成功后退出。我不知道我推荐这个，因为错误可能导致一个真正的无限循环。

You could accomplish your logic by putting your command in an infinite loop, and have it EXIT upon success. I'm not sure I recommend this, since an error could result in a truly infinite loop.

cmd.exe /c "for /l %N in () do @copy /y new_file.exe file.exe && exit"

我想你可以添加一个在N次失败尝试后退出的计数器。这是一个成功后立即退出的示例，如果失败3次也会退出。

I suppose you could add a counter that EXITs after N number of failed attempts. Here is an example that exits immediately upon success, and also exits if it fails 3 times.

cmd.exe /c "for /l %N in () do @copy /y new_file.exe file.exe && exit || >nul 2>&1 set /a 1/((failCnt+=1)%3) || exit"

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