bash 在第一个错误时停止
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Stop on first error
提问by Matt Joiner
Possible Duplicate:
Automatic exit from bash shell script on error
可能的重复：
出现错误时自动退出 bash shell 脚本
How can I have bash stop on the first command failure, without putting stuff like this all through my code?
如何在第一个命令失败时让 bash 停止，而不在我的代码中加入这样的东西？
some_prog || exit 1
some_other_prog || exit 1
回答by Alok Singhal
Maybe you want set -e:
也许你想要set -e：
www.davidpashley.com/articles/writing-robust-shell-scripts.html#id2382181:
www.davidpashley.com/articles/writing-robust-shell-scripts.html#id2382181：
This tells bash that it should exit the script if any statement returns a non-true return value. The benefit of using -e is that it prevents errors snowballing into serious issues when they could have been caught earlier. Again, for readability you may want to use set -o errexit.
这告诉 bash 如果任何语句返回非真返回值，它应该退出脚本。使用 -e 的好处是它可以防止错误在本可以更早被发现的情况下滚雪球般地变成严重的问题。同样，为了可读性，您可能需要使用 set -o errexit。
