树莓派locale问题小记

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在给树莓派安装tmux时遇到了locale相关问题，命令locale显示：

pi@raspberrypi:/usr/share/i18n/locales $ locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_GB.UTF-8
LANGUAGE=
LC_CTYPE=en_US.UTF-8
LC_NUMERIC=zh_CN.UTF-8
LC_TIME=zh_CN.UTF-8
LC_COLLATE="en_GB.UTF-8"
LC_MONETARY=zh_CN.UTF-8
LC_MESSAGES="en_GB.UTF-8"
LC_PAPER=zh_CN.UTF-8
LC_NAME=zh_CN.UTF-8
LC_ADDRESS=zh_CN.UTF-8
LC_TELEPHONE=zh_CN.UTF-8
LC_MEASUREMENT=zh_CN.UTF-8
LC_IDENTIFICATION=zh_CN.UTF-8
LC_ALL=

通过命令locael -a查看当前系统系统支持的字符编码方式：

pi@raspberrypi:/usr/share/i18n/locales $ locale -a
locale: Cannot set LC_CTYPE to default locale: No such file or directory
C
C.UTF-8
en_GB.utf8
POSIX

没有支持zh_CN.UTF-8以及en_US.UTF-8，那么打算通过locale-gen生成相关字符编码库，执行命令之后通过locale -a查看，结果还是没有支持这两种编码方式。

修改/etc/locale.gen文件，打开对zh_CN.UTF-8以及en_US.UTF-8的支持，之后运行locale-gen命令：

pi@raspberrypi:/etc $ sudo locale-gen
Generating locales (this might take a while)...
  en_GB.UTF-8... done
  en_US.UTF-8... done
  zh_CN.UTF-8... done
Generation complete.

OK编译成功，可以安装tmux了。

详细locale的详细原理没有做进一步的探究，感兴趣可以看一下这篇博文

locale的设定及其LANG、LC_ALL、LANGUAGE环境变量的区别