getenforcesetenforcesetenforce 0setenforce 1/etc/selinux/configSELINUX=disabledgrub-instlal /dev/sdaN でパーティションの先頭に install し直すrpm -qarpm -qa “rpc*” rpm -qi PACKAGErpm -ql PACKAGErpm -qf FILE/etc/yum.repos.d/CentOS-Base.repo を編集yum check-updateyum updateyum update PACKAGEyum install PACKAGEyum cleanyum remove PACKAGEyum info PACKAGEyum listyum search KEYWORD