是否有可能得到一个子shell退出code？ [英] Is it possible to get the exit code from a subshell?

问题描述

让我们想象我有一个bash脚本，在这里我称之为：

Let's imagine I have a bash script, where I call this:

bash -c "some_command"
do something with code of some_command here

是否有可能获得 some_command 的code？我不执行 some_command 直接运行该脚本，因为我不想改变它的环境的外壳。

Is it possible to obtain the code of some_command? I'm not executing some_command directly in the shell running the script because I don't want to alter it's environment.

推荐答案

$？将包含返回code some_command 只是像往常一样。

$? will contain the return code of some_command just as usual.

当然，它也可能包含来自一个bash的code，万一出事了之前您的命令，甚至可以执行（错名，诸如此类的东西）。

Of course it might also contain a code from bash, in case something went wrong before your command could even be executed (wrong filename, whatnot).

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