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This is provided in CentOS7, CentOS6 is at .etc / sysconfig / i18n profile. Operating under the root user, use the locale command to view the locale, see LANG = en_US.utf8 US English
locale
View profile locale.conf
ls /etc | grep locale
Edit the configuration file locale.conf
vim /etc/locale.conf
Modify LANG = en_US.utf8 to LANG = zh_CN.utf8, save and exit, and finally to restart it to take effect
Setting Success