如何检测Unix终端字符编码？
有没有办法检测调用我的 Java 程序的终端中的字符编码集？在 Windows 中，我可以调用“chcp”工具并解析输出。
但在 Linux 或 Mac 上呢？
Is there a way to detect the character encoding set in the terminal which is calling my Java program? In Windows I can call the "chcp" tool and parse the output.
But what about in Linux or Mac?
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检查 locale(1) 手册页
您可以通过设置 LANG 环境变量来更改它
LC_IDENTIFICATION="en_US.iso88591"
Check the locale(1) man page
You can change this by setting the LANG environment variable
LC_IDENTIFICATION="en_US.iso88591"
从终端应用程序到终端窗口内运行的进程没有定义的通信路径（缺少被模拟的终端定义的通信路径，例如窗口大小更改）。在任何其他类 Unix 操作系统上也是如此。环境变量只能在进程启动时继承。您所能做的就是查看这些环境变量的值。
您真的希望人们在终端窗口打开时更改编码吗？我根本无法想象这是一个常见的用例。
There is no defined communication path from the terminal app to processes running inside a terminal window (short of those defined by the terminal being emulated, such as window size changes). This would be true on any other Unix-like OS as well. Environment variables can only be inherited when a process starts. Looking at the values of these environment variables is all you can do.
Do you really expect people to be changing the encoding while a terminal window is open? I can't imagine this is a common use case at all.