输出终端语言环境：
locale

root@server-0ncbmx:~# locale -a
C
C.utf8
POSIX
en_US.utf8

设置语言环境和字符类型环境类型
export LANG=en_us.UTF-8
export LC_CTYPE=en_US.UTF-8

验证输出字符环境类型
root@server-0ncbmx:~# local3
-bash: local3: command not found
root@server-0ncbmx:~# 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=C.UTF-8