配置YUM源

1.配置YUM源

  a.mv /etc/yum.repos.d /etc/yum.repos.d.bak;

  b.修改/etc/yum.conf文件，添加:

             [extras]

name=Fedora Extras $releasever - $basearch
baseurl=ftp://ftp3.tsinghua.edu.cn/mirror/download.fedora.redhat.com/pub/fedora/linux/extras/6/i386
enabled=1

[updates]
name=Fedora Core $releasever - $basearch - Updates
baseurl=ftp://ftp3.tsinghua.edu.cn/mirror/download.fedora.redhat.com/pub/fedora/linux/core/updates/6/i386
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora

[core]
name=Fedora Core $releasever - $basearch
baseurl=ftp://ftp3.tsinghua.edu.cn/mirror/download.fedora.redhat.com/pub/fedora/linux/core/6/i386/os
enable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora file:///etc/pki/rpm-gpg/RPM-GPG-KEY

   c.   yum update：更新所有包；

   yum upgrade：更新所有包同时删除过时包；
   yum list
   yum list installed
   yum list updates：列出可升级；
   yum install/remove package-name。