CentOS7卸载，安装rpm包

# 强制卸载：
rpm -e --nodeps xxxxxx.rpm

# 强制安装：
rpm -ivh --nodeps xxxxxx.rpm

示例：

rpm -e --nodeps glib2

# 进入挂载的镜像内
cd /media/cdrom/
cd Packages/
ls | grep glib2

[root@host Packages]# ls | grep glib2
compat-libpackagekit-glib2-16-0.8.9-1.el7.x86_64.rpm
glib2-2.54.2-2.el7.x86_64.rpm
glib2-devel-2.54.2-2.el7.x86_64.rpm
pulseaudio-libs-glib2-10.0-5.el7.x86_64.rpm

[root@host Packages]# rpm -ivh glib2-2.54.2-2.el7.x86_64.rpm