在Bash中测试复合条件组 [英] groups of compound conditions in Bash test

问题描述

我想有一些条件组如果语句猛砸。具体来说，我正在寻找类似如下：

I want to have some groups of conditions in a Bash if statement. Specifically, I'm looking for something like the following:

if <myCondition1 and myCondition2> or <myCondition3 and myCondition4> then...

怎么可能I组的条件在一起的if语句我描述了使用一个在猛砸的方式吗？我感谢你，你可能对任何想法。

How may I group the conditions together in the way I describe for use with one if statement in Bash? I thank you for any ideas you may have on this.

推荐答案

使用了与放大器;＆安培; （和）和|| （或）运算符：

Use the && (and) and || (or) operators:

if [[ expression ]] && [[ expression ]] || [[ expression ]] ; then

它们还可内使用一个单一[[]]：

They can also be used within a single [[ ]]:

if [[ expression && expression || expression ]] ; then

他们

最后，你可以组，以确保评估的顺序：

And, finally, you can group them to ensure order of evaluation:

if [[ expression && ( expression || expression ) ]] ; then

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