卸载老的vim
yum remove vim-* -y
下载第三方yum源
wget -P /etc/yum.repos.d/ https://copr.fedorainfracloud.org/coprs/lbiaggi/vim80-ligatures/repo/epel-7/lbiaggi-vim80-ligatures-epel-7.repo
install vim
yum install vim-enhanced sudo -y
验证vim版本
rpm -qa |grep vim