关联数组:错误“声明:-A:无效选项"； [英] Associative arrays: error "declare: -A: invalid option"

问题描述

我编写了一个在bash(v 4)中使用关联数组的脚本.

I've written a script that uses associative arrays in bash (v 4).

它在使用4.1.5(1)-release的本地计算机上正常工作.

It works fine on my local machine which is using 4.1.5(1)-release.

在生产计算机上，使用4.1.0(1)-release声明assoc数组的以下行失败:

On the production machine, using 4.1.0(1)-release the following line, which declares the assoc array, fails:

declare -A uniqjars

显示以下消息:

/script.sh: line 11: declare: -A: invalid option
declare: usage: declare [-afFirtx] [-p] [name[=value] ...]

我对这是bash 4的一般功能有印象吗?

I was under the impression this was a general bash 4 feature?

在生产机器上使用bash的人中，它讨论了使用-A的方法，因此我认为应该可以工作.

In the man for bash on the production machine it discusses using -A so I assume it should work.

关联数组是使用以下方法创建的 declare -A name.

Associative arrays are created using declare -A name.

我可以通过打印出echo 'bash -version的值来确认脚本使用的是正确的bash版本.

I can confirm the script is using the right version of bash by printing out the value of echo 'bash -version.

我做错了什么?

推荐答案

请确保在shell脚本顶部(#!/bin/bash或其他版本)作为解释器调用的bash版本也是版本4.在做:

Make sure the version of bash being invoked as interpreter at the top of your shell script (#!/bin/bash or whatever) is also version 4. If you're doing:

bash --version

它会给您v4，请执行which bash来检查其位置.

and it's giving you v4, do a which bash to check it's location.

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