The nl_langinfo (CODESET) function is also what the locale charmap command calls to find the name of the encoding specified by the current locale.
nl_langinfo (CODESET)函数也是由locale charmap命令调用，从而查找当前语言环境指定的编码名称。
The Character Map can be started by executing the command charmap.
可以通过执行命令 charmap 启动 Character Map。
You can query the name of the character encoding in your current locale with the command locale charmap.
您可以用命令locale charmap查询当前语言环境中字符编码的名称。
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