Bash 间接数组寻址? [英] Bash indirect array addressing?

问题描述

假设我有一些 bash 数组:

Suppose I have some bash arrays:

A1=(apple trees)
A2=(building blocks)
A3=(color television)

和索引J=2，如何获取A2的数组内容?

And index J=2, how to get the array contents of A2?

推荐答案

我已经找到了解决方案，可以通过以下方式解决:

I've already found a resolution, this can be done by:

$ Aref=A$J
$ echo ${!Aref}
building
$ Aref=A$J[1]
$ echo ${!Aref}
blocks
$ Aref=A$J[@]
$ echo "${!Aref}"
building blocks

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