Cannot set LC_CTYPE to default locale: No such file or directory

将系统语言环境改为英文的en_US.UTF-8

查看当前系统语言环境

#locale

编辑配置文件，将zh_US.UTF-8改为en_US.UTF-8，zh改为en

#sudo nano /etc/default/locale

LANG="en_US.UTF-8"
LANGUAGE="en_US:en"

继续查看更改后的系统语言变量，如果出现下列错误，说明没安装en_US的local

pi@raspberry:~$ locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LANGUAGE=en_US:en

查看系统内安装的locale

pi@raspberry:~$ locale -a
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_COLLATE to default locale: No such file or directory
C
POSIX
zh_CN.utf8

看吧，没装en_US.UTF-8

安装en_US.UTF-8

sudo locale-gen en_US.UTF-8

再次查看，应该一切正常了。