Fixing this is an exercise in shell programming, though, not really part of the alarm API.
但是，解决此问题仅仅是一个shell编程练习，不是警报api的实际部分。
I spent a lot of time thinking about how to teach shell programming, and the approach I have come up with is very different from most approaches that I have seen.
我花了很多时间想- - - - - -该如何教授shell编程，然后呢，最后我自己想到的方法是跟我所见到过的方法很不同的。
The Bourne shell is easier to use and understand than the C shell, but it is less practical for the complex script programming that you might want to achieve within the shell programming environment.
Bourne Shell 比 C Shell 更容易使用和理解，但是对于您可能希望在 Shell 编程环境中实现的复杂脚本编程，它可能就不太实用了。
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