CentOS 7 install firefox

1) download newest firefox , in this case, is 35.0.1
    firefox-35.0.1.tar.bz2

2) cd to the /usr/local dict, we will install new firefox into this dict
    [root@localhost firefox]# cd /usr/local/
    [root@localhost local]# ls
    bin  etc  games  include  lib  lib64  libexec  sbin  share  src

3) unzip
    [root@localhost local]# tar -xjf /home/samliux/sw/firefox-35.0.1.tar.bz2
    [root@localhost local]# ls
    bin  etc  firefox  games  include  lib  lib64  libexec  sbin  share  src
   
4) find the old firefox
    [root@localhost local]# which firefox
    /usr/bin/firefox

5)replace this file with the new one
   [root@localhost bin]# mv firefox firefox.24.5.0   (rename the older firefox)
6) link the new file
    [root@localhost bin]# ln -s /usr/local/firefox/firefox /usr/bin/firefox