问题的产生，都是源于真实的需求。。。
01、yum安装切保存rpm包于本地
[root@yhs_web_1 ~]# vim /etc/yum.conf [main] cachedir=/var/cache/yum/$basearch/$releasever #保存路径 keepcache=1 #开启保存 debuglevel=2 logfile=/var/log/yum.log exactarch=1 obsoletes=1 gpgcheck=1 plugins=1 installonly_limit=5 bugtracker_url=http://bugs.centos.org/set_project.php?project_id=16&ref=http://bugs.centos.org/bug_report _page.php?category=yumdistroverpkg=centos-release # This is the default, if you make this bigger yum won't see if the metadata # is newer on the remote and so you'll "gain" the bandwidth of not having to # download the new metadata and "pay" for it by yum not having correct # information. # It is esp. important, to have correct metadata, for distributions like # Fedora which don't keep old packages around. If you don't like this checking # interupting your command line usage, it's much better to have something # manually check the metadata once an hour (yum-updatesd will do this). # metadata_expire=90m # PUT YOUR REPOS HERE OR IN separate files named file.repo # in /etc/yum.repos.d
02、下载指定rpm包，不安装
yum install -y yum-utils #yumdownloade
yumdownloade openssh #下载切保存到本地
03、下载rpm包切下载依赖相关包，不安装
yum -y install yum-downloadonly #yum 插件
yum -y install --downloadonly --downloaddir=/tmp/ vlock
--downloadongly 仅仅下载
--downloaddir 指定保存目录
yum-downloadonly:
链接: https://pan.baidu.com/s/1i5L4NOx 密码: 99tb