巴什引用问题 [英] Bash quoting issue

问题描述

我有这个奇怪的问题，我不明白为什么发生。这应该是任何庆典忍者的一块蛋糕。

I have this weird issue, I can't understand why is happening. It should be a piece of cake for any bash ninja.

OPTIONS="-auto -batch -ignore 'Path one' -ignore 'Path two' -ignore 'Path three'"
unison $OPTIONS a b

我希望这是翻译成...

I expected this to be translated as...

unison -auto -batch -ignore 'Path one' -ignore 'Path two' -ignore 'Path three' a b

......，只是工作。但事实并非如此。当运行完整的命令，我没有问题，齐声是确定这一点。但是，当我运行命令齐声$选项A B ，齐声抱怨：

Usage: unison [options]
    or unison root1 root2 [options]
    or unison profilename [options]

For a list of options, type "unison -help".
For a tutorial on basic usage, type "unison -doc tutorial".
For other documentation, type "unison -doc topics".

unison was invoked incorrectly (too many roots)

我在做什么错了？

What am I doing wrong?

推荐答案

BASH FAQ条目＃50：我M试图在一个变量把一个命令，但复杂的案件总是失败！

BASH FAQ entry #50: "I'm trying to put a command in a variable, but the complex cases always fail!"

options=(-auto -batch -ignore 'Path one' ...)
unison "${options[@]}" a b

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