[root@wang yum.repos.d]# yum install -y yum-plugin-downloadonly

安装一个包的同时
加上
yum install yap --downloadonly --downloaddir=/tmp/

查看

[root@wang yum.repos.d]# ls /tmp/yap-5.1.3-2.1.el6.x86_64.rpm
/tmp/yap-5.1.3-2.1.el6.x86_64.rpm

之前下载的前提是没有安装的包可下载
下边是已经安装的包在下载命令
reinstall 关键词

# yum reinstall vim-enhanced --downloadonly --downloaddir=/tmp/

[root@wang yum.repos.d]# ls /tmp/vim-enhanced-7.4.629-5.el6.x86_64.rpm
/tmp/vim-enhanced-7.4.629-5.el6.x86_64.rpm