yum下载包保存到本地

#下载yumdownloadonly插件
yum install yum-plugin-downloadonly

# yum 下载rpm包到指定目录，只下载不安装
yum install  --downloadonly --downloaddir=路径  安装包名
实例：yum install  --downloadonly --downloaddir=/usr/local  libXScrnSaver
# 安装
rpm -Uvh --force --nodeps *.rpm
实例：rpm -Uvh --force --nodeps libXScrnSaver-1.2.2-6.1.el7.x86_64.rpm

# 修改配置文件，修改下面两行内容　cat /etc/yum.conf 
cachedir=/usr/local/cache
keepcache=1

# 做测试
yum install nss -y

＃看效果
[root@localhost packages]# cd /usr/local/cache/
[root@localhost cache]# ll
total 8
drwxr-xr-x. 4 root root 278 Jun 16 21:59 base
drwxr-xr-x. 4 root root 183 Jun 16 21:59 extras
-rw-r--r--. 1 root root 76 Jun 16 22:00 timedhosts
-rw-r--r--. 1 root root 490 Jun 16 22:00 timedhosts.txt
drwxr-xr-x. 4 root root 183 Jun 16 21:59 updates