Uninstall Firefox
If using centos, fedora, rhel, etc., can be used: yum remove firefox, if ubuntu, then, enter: apt-get remove firefox
A: Installation Firefox command
yum -y install firefox
Two: The browser displays Chinese
yum install Fonts-chinese
yum install Fonts-ISO8859-2-75dpi
Modify / etc / sysconfig / i18n, as follows
LANG="en_US.UTF-8"
SYSFONT="lat0-sun16"