In a 64-bit operating system, use YUM to install only the settings of the pure 64-bit software package.

In a 64-bit operating system, if you use YUM to install only the configuration of the pure 64-bit software package, installing the 32-bit and 64-bit software at the same time will not cause any problems to the system, however, this will waste hard disk space and make the system look bloated and not clean. If you want to keep a pure 64-bit system and avoid installing a 32-bit package on 64-bit CentOS, you only need to install the package in yum. add a line in conf to filter out i386, And the i686 software package can: Reference # vi/etc/yum. conf [main]... exclude = *. i? 86. Then, delete the i386/i686 package that has been followed on the system: # vi/etc/yum. conf # yum remove \ *. I \? 86