1 配置
rm -rf /var/cache/yum/
rm -f /etc/yum.repos.d/CentOS-Base.repo
vi /etc/yum.repos.d/CentOS-Base.repo

     在文件中/etc/yum.repos.d/CentOS-Base.repo中輸入下列內(nèi)容:
[base]
name=CentOS-$releasever - Base
baseurl=http://172.25.201.9/centos/5.3
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5.3
     #注:上面文件的5.2要替換成相應(yīng)的發(fā)行版本,比如5.0, 5.2 或5.3
     #查看發(fā)行版本 more /etc/issue   

(

[root@delhi Samba]# less /etc/issue

CentOS release 5.4 (Final)

Kernel \r on an \m)  但是我使用的5.3

[root@rgw yum.repos.d]# more /etc/yum.repos.d/fedora.repo
[base]
name=fedora - Base
baseurl=http://172.25.201.9/fedora/FC8
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-test file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora
[root@rgw yum.repos.d]#

 2 使用
    比如要安裝gcc:
      [root@szmonitor ~]# yum install samba