bash如何声明和迭代值对(其中值可能包含空格)(二维数组) [英] bash How to declare and iterate over pairs of values where values may contain spaces (two dimensional array)

问题描述

例如，我有成对的目录.这些对包含空格(和/或其他不便之处，例如加号或特殊字符.ext4容易支持的说法.)

I have pairs of, for example, directories. The pairs contain spaces (and/or other inconveniences like extra periods or special chars. Anything ext4 easily supports let say.)

'/foo/dolor sit/amet.elit'         '/bar/accumsan/luctus massa.nec'
'/baz/sagittis. Fusce/vitae.dolor' '/bam/Nunc aliquetjusto.metus'

我想编写一个bash脚本，其中这些对是硬编码/常量的.

I want to write a bash script where these pairs are hard-coded/constants.

我非常希望在定界符中声明这些字符串，或者不需要对任意字符串进行预处理(例如，如果可能的话，我不想在所有文字空白上添加转义符)

I would highly prefer declaring the strings within a delimiter or such that does not need the arbitrary string to be preprocessed (eg I don't want to add escapes on all literal whitespaces if possible)

对于声明的字符串对，我希望进入一个循环，其中两个字符串在一次迭代中都可以作为单独的变量使用，例如 $ LEFT 和 $ RIGHT .

With declared pairs of strings, I wish to enter a loop where both the strings are available in one iteration as separate variables, e.g. $LEFT and $RIGHT.

就像使用简单的文件操作一样，例如复制，移动，链接，比较.

Likely uses being simple file operations like copy, move, link, diff.

注释:

• 数组的高度"应允许很多对.
• 如果声明和迭代可以支持大于2的2D数组，请注意如何扩展到所需的范围.
• 如果bash具有特定于数组"的数据类型，则对问题/答案不是必不可少的.任何可迭代的二维声明和迭代就足够了.

推荐答案

一种愚蠢而简单的方法，如果仍然要对数据进行硬编码，则可以将数据作为Shell函数的参数进行硬编码.

A stupid-simple approach, If you're going to hard code the data anyway, you can hard code the data as parameters to shell functions.

#!/usr/bin/env bash

do_for_pair() {
    echo $1
    echo $2
}

do_for_pair "/foo/dolor sit/amet.elit"         "/bar/accumsan/luctus massa.nec"
do_for_pair "/baz/sagittis. Fusce/vitae.dolor" "/bam/Nunc aliquetjusto.metus"

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