'set -e' 在 bash 中有什么作用?

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时间:2020-09-18 17:07:11  来源:igfitidea点击:

What does 'set -e' do in bash?

bash

提问by Andy

I've received a comment on a merge request saying that I need to use 'set -e' to do error handling, but I'm struggling to find anything that actually details what it does.

我收到了关于合并请求的评论,说我需要使用“set -e”来进行错误处理,但我正在努力寻找任何能够详细说明它的作用的内容。

回答by Markus Appel

From http://linuxcommand.org/lc3_man_pages/seth.html:

http://linuxcommand.org/lc3_man_pages/seth.html

-e  Exit immediately if a command exits with a non-zero status.

回答by Xilpex

If you type help setin your bash terminal, here is the output:

如果您help set在 bash 终端中输入,则输出如下:

-e  Exit immediately if a command exits with a non-zero status.

This means that the set -ecommand stops the a script from executing if a command or pipeline runs into an error.

这意味着set -e如果命令或管道遇到错误,该命令会停止执行脚本。