Centos 6 32位下安装
wget http://pkgs.repoforge.org/unrar/unrar-4.2.3-1.el6.rf.i686.rpm
rpm -ivh unrar-4.2.3-1.el6.rf.i686.rpm
Centos 6 64位下安装
wget http://pkgs.repoforge.org/unrar/unrar-4.2.3-1.el6.rf.x86_64.rpm
rpm -ivh unrar-4.2.3-1.el6.rf.x86_64.rpm