redhat使用yum在线更新

导入KEY  rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY*

设置更新源  /etc/yum.repos.d/rhel-debuginfo.repo

[base]
name=Red Hat Enterprise Linux $releasever -Base
baseurl=http://mirrors.sohu.com/centos/5.5/os/$basearch/
gpgcheck=1

[update]
name=Red Hat Enterprise Linux $releasever -Updates
baseurl=http://mirrors.sohu.com/centos/5.5/updates/$basearch/
gpgcheck=1

[extras]
name=Red Hat Enterprise Linux $releasever -Extras
baseurl=http://mirrors.sohu.com/centos/5.5/extras/$basearch/
gpgcheck=1

[addons]
name=Red Hat Enterprise Linux $releasever -Addons
baseurl=http://mirrors.sohu.com/centos/5.5/addons/$basearch/
gpgcheck=1

原文来自http://www.cnblogs.com/itfriend/articles/2037408.html