Bash中双引号前的美元字符 [英] Dollar character before double quotes in Bash

问题描述

我最近读了一些bash代码echo $"asdf"，$的作用是什么?

I recently read some bash code, echo $"asdf", what is $ for?

$"asdf"和"asdf"有什么区别?

推荐答案

如 bash手册，它用于本地化:

用双引号引起来的字符串前面带有一个美元符号('$')， 根据当前语言环境转换的字符串.如果 当前语言环境为C或POSIX，美元符号将被忽略.如果 字符串被翻译和替换，替换用双引号引起来.

A double-quoted string preceded by a dollar sign (‘$’) will cause the string to be translated according to the current locale. If the current locale is C or POSIX, the dollar sign is ignored. If the string is translated and replaced, the replacement is double-quoted.

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