如何让bash subshel​​l继承父项的set选项? [英] How to let bash subshell to inherit parent's set options?

问题描述

假设我在脚本"a.sh"中进行了 set -x 设置，它调用了另一个脚本"b.sh".

Let’s say I do set -x in a script "a.sh", and it invokes another script "b.sh".

是否可以让"b.sh"继承"a.sh"的 -x 选项?

Is it possible to let "b.sh" inherit the -x option from "a.sh"?

推荐答案

导出

Export SHELLOPTS from the parent and all scripts invoked from it will inherit its flags.

$ cat ./foo
#!/bin/bash -
export SHELLOPTS
set -x
./bar
$
$ cat ./bar
#!/bin/bash -
set -o | grep xtrace
$
$ ./foo
+ ./bar
+ set -o
+ grep xtrace
xtrace          on

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