32bit 64bit 安装包区别
32 bit <x86>
unrar-4.1.4-1.el5.rf.i386.rpm
unrar-4.1.4-1.el6.rf.i686.rpm
64 bit <x64>
unrar-4.1.4-1.el5.rf.x86_64.rpm
unrar-4.1.4-1.el6.rf.x86_64.rpm
