Linux-LC_ALL ＞ LC_* ＞ LANG

locale命令：设置和显示程序运行的语言环境

forlinx@ok3568:~$ locale
LANG=C.UTF-8
LANGUAGE=
LC_CTYPE="C.UTF-8"
LC_NUMERIC="C.UTF-8"
LC_TIME="C.UTF-8"
LC_COLLATE="C.UTF-8"
LC_MONETARY="C.UTF-8"
LC_MESSAGES="C.UTF-8"
LC_PAPER="C.UTF-8"
LC_NAME="C.UTF-8"
LC_ADDRESS="C.UTF-8"
LC_TELEPHONE="C.UTF-8"
LC_MEASUREMENT="C.UTF-8"
LC_IDENTIFICATION="C.UTF-8"
LC_ALL=

forlinx@ok3568:~$ locale -a
C
C.UTF-8
POSIX
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LC_ALL > LC_* > LANG

LC_ALL 优先级最高
LC_* 优先级其次
LANG 优先级最低
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安装简体中文包

sudo apt install language-pack-zh-hans

forlinx@ok3568:~$ locale -a
C
C.UTF-8
POSIX
zh_CN.utf8
zh_SG.utf8
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update-locale：更新locale

update-locale [OPTIONS] [LANG=locale] [LC_NUMERIC=locale] ...
update-locale LANG=zh_CN.utf8
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