bash - 你如何返回到源 bash 脚本？

Question

我在 bash 脚本中使用“source”，如下所示:

#!/bin/bash
source someneatscriptthatendsprematurely.sh

我想退出 someneatscriptthatendsprematurely.sh 脚本，而不退出主脚本。

感谢任何帮助!

Answer 1

您需要 return 语句:

return [n]

Causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command executed in the function body. If used outside a function, but during execution of a script by the . (source) command, it causes the shell to stop executing that script and return either n or the exit status of the last command executed within the script as the exit status of the script. If used outside a function and not during execution of a script by ., the return status is false. Any command associated with the RETURN trap is executed before execution resumes after the function or script.

您可以使用以下两个脚本看到这一点:

script1.sh:
    . script2.sh
    echo hello again

script2.sh:
    echo hello
    return
    echo goodbye

当您运行 script1.sh 时，您会看到:

hello
hello again