12. Linux在线升级yum

软件包仓库源

将yum源放在/etc/yum.repo.d

root@cfm880 Packages]# cd /etc/yum.repos.d/
[root@cfm880 yum.repos.d]# ls
packagekit-media.repo rhel-source.repo

用第三方仓库源

rpm -ivh rpmforge-release-0.5.2-2.el6.rf.i686.rpm

[root@cfm880 yum.repos.d]# ls
mirrors-rpmforge mirrors-rpmforge-extras mirrors-rpmforge-testing packagekit-media.repo

1. yum list 查看仓库中软件

[root@cfm880 yum.repos.d]# yum list | grep tftp
Unable to read consumer identity
tftp-server.i686 0.49-7.el6 installed
atftp.i686 0.7-6.el6.rf rpmforge
atftp-server.i686 0.7-6.el6.rf rpmforge

2. yum install 包名     安装软件

3. yum remove 包名     卸载软件

12. Linux在线升级yum

原文：http://www.cnblogs.com/chengfangming/p/4803689.html