使用“EXIT/B X"退出批处理，其中 X>=1 就像在使用 && 时命令成功完成一样.或 ||批处理调用之间的运算符 [英] Exiting batch with `EXIT /B X` where X>=1 acts as if command completed successfully when using && or || operators between batch calls

问题描述

我正在尝试使用 EXIT/BX 命令链接一系列 .bat 文件以返回成功或失败以及 && 和 || 用于下一个 .bat 的条件运行(例如 a.bat && b.bat).

I'm trying to chain a series of .bat files using the EXIT /B X command to return success or failure and && and || for conditional running of the next .bat (e.g. a.bat && b.bat).

无论我是调用 EXIT/B 0 还是其他任何东西来结束 a.bat，a.bat &&b.bat 之后会调用 b.bat.我的理解是 EXIT/B 0 应该设置 ERRORLEVEL=0，这是成功的，所以 && 应该继续.与此相反的是，调用 EXIT/B 1 应该设置 ERRORLEVEL=1 失败，所以 && 应该停止.我在这里错过了什么?

Regardless of whether I call EXIT /B 0 or anything else to end a.bat, a.bat && b.bat will call b.bat afterward. My understanding is that EXIT /B 0 should set ERRORLEVEL=0, which is success, so the && should continue. The counterpoint to this is that calling EXIT /B 1 should set ERRORLEVEL=1 which is failure, so the && should stop. What am I missing here?

简单的例子:

对于非批处理命令，按预期执行:

For non-batch commands, acting as expected:

C:> echo test|findstr test>NUL && echo yes
yes

C:> echo test|findstr test>NUL || echo yes

C:> echo test|findstr nope>NUL && echo yes

C:> echo test|findstr nope>NUL || echo yes
yes

使用 EXIT/B 总是看到 a.bat 成功:

Using EXIT /B always sees a.bat as successful:

C:> echo @EXIT /B 0 > a.bat

C:> a.bat && echo yes
yes

C:> a.bat || echo yes

C:> echo @EXIT /B 1 > a.bat

C:> a.bat && echo yes
yes

C:> a.bat || echo yes

如何退出 a.bat 以便 a.bat &&b.bat 和 a.bat ||b.bat 行为是否符合预期?

How can I exit from a.bat so that a.bat && b.bat and a.bat || b.bat behave as expected?

所有命令都在 Windows XP SP3 上的 cmd.exe 中运行.

All commands are run in cmd.exe on Windows XP SP3.

推荐答案

如果您问我，批处理文件中的退出代码正是出于这个原因而损坏的，但是您可以使用一种非常巧妙的解决方法.作为批处理文件的最后一行，使用:

If you ask me, exit codes in batch files are broken for this exact reason, but there is a hacky workaround you can use. As the last line of your batch file, use:

@%COMSPEC% /C exit 1 >nul

由于这是一个实际启动的进程，因此您会得到一个真正的进程退出代码和 &&和 ||会工作.

Since this is an actual process that is started you get a real process exit code and && and || will work.

这篇关于使用“EXIT/B X"退出批处理，其中 X>=1 就像在使用 && 时命令成功完成一样.或 ||批处理调用之间的运算符的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！