ubuntu 16 解决错误 manpath: can't set the locale; make sure $LC_* and $LANG are correct

阿里云上的服务器，运行的是ubuntu 16, 登录时报错 
manpath: can't set the locale; make sure $LC_* and $LANG are correct
安装zabbix时也看到大量因为这个not set导致的warning
于是尝试fix

解决办法是：
sudo apt-get -y install language-pack-zh-hans
locale

重新登录，看到不再报这样的错误