yum安装软件后保留rpm包

设置方法：

将/etc/yum.conf里对应的keepcache参数改为1即可，然后用yum安装软件，rpm包便会保留在cachedir对应的目录下

#先做个备份
[root@localhost ~]# cp /etc/yum.conf{,.`date +%F`}   
#修改yum.conf文件
[root@localhost ~]#sed -i 's#keepcache=0#keepcache=1#g' /etc/yum.conf 
[root@localhost ~]#sed -n '2,3p' /etc/yum.conf  
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=1

参考：https://www.cnblogs.com/madsnotes/p/5682789.html