redhat 4
http://mirror.centos.org/centos-4/4.7/os/i386/CentOS/RPMS/yum-2.4.3-4.el4.centos.noarch.rpm
rpm -ivh yum-2.4.3-4.el4.centos.noarch.rpm
warning: yum-2.4.3-4.el4.centos.noarch.rpm: V3 DSA signature: NOKEY, key ID 443e1821
error: Failed dependencies:
python-elementtree is needed by yum-2.4.3-4.el4.centos.noarch
python-sqlite is needed by yum-2.4.3-4.el4.centos.noarch
urlgrabber is needed by yum-2.4.3-4.el4.centos.noarch
yum-metadata-parser is needed by yum-2.4.3-4.el4.centos.noarch
yumconf is needed by yum-2.4.3-4.el4.centos.noarch
http://mirror.centos.org/centos-4/4.7/os/i386/CentOS/RPMS/yum-metadata-parser-1.0-8.el4.centos.i386.rpm
rpm -ivh yum-metadata-parser-1.0-8.el4.centos.i386.rpm
warning: yum-metadata-parser-1.0-8.el4.centos.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
error: Failed dependencies:
libsqlite3.so.0 is needed by yum-metadata-parser-1.0-8.el4.centos.i386
http://mirror.centos.org/centos-4/4.7/os/i386/CentOS/RPMS/sqlite-3.3.6-2.i386.rpm
rpm -ivh sqlite-3.3.6-2.i386.rpm
warning: sqlite-3.3.6-2.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
Preparing... ########################################### [100%]
1:sqlite ########################################### [100%]
http://mirror.centos.org/centos-4/4.7/os/i386/CentOS/RPMS/python-sqlite-1.1.7-1.2.1.i386.rpm
http://mirror.centos.org/centos-4/4.7/os/i386/CentOS/RPMS/python-elementtree-1.2.6-5.el4.centos.i386.rpm
http://mirror.centos.org/centos-4/4.7/os/i386/CentOS/RPMS/python-urlgrabber-2.9.8-2.noarch.rpm
rpm -ivh python-*
warning: python-elementtree-1.2.6-5.el4.centos.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
Preparing... ########################################### [100%]
1:python-urlgrabber ########################################### [ 33%]
2:python-elementtree ########################################### [ 67%]
3:python-sqlite ########################################### [100%]
ftp://ftp.isu.edu.tw/pub/Linux/CentOS/4.7/os/ia64/CentOS/RPMS/centos-yumconf-4-4.5.noarch.rpm
http://rpm.pbone.net/index.php3/stat/4/idpl/2665731/com/centos-yumconf-4-4.5.noarch.rpm.html
rpm -ivh
配置
vi /etc/yum.repos.d/CentOS-Base.repo
[base]
name=Red Hat Enterprise As release 4 base
baseurl=http://mirror.centos.org/centos-4/4.7/os/i386/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos-4/4.7/os/i386/RPM-GPG-KEY-centos4
[update]
name=Red Hat Enterprise As release 4 updates
baseurl=http://mirror.centos.org/centos-4/4.7/updates/i386/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos-4/4.7/os/i386/RPM-GPG-KEY-centos4
[extras]
name=Red Hat Enterprise As release 4 extras
baseurl=http://mirror.centos.org/centos-4/4.7/extras/i386/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos-4/4.7/os/i386/RPM-GPG-KEY-centos4
rhel 5
rhel 5 系统上已有支持并安装yum,但是要用到rh本身的更新服务，如果没买就用不了。
只需要把 /etc/yum.repos.d/rhel-debuginfo.repo 里的内容，替换为centos 5 的就可以了。
把上面的4.7替换为 5.3即可
如果在装系统时没有装上yum,则另外安装
如下，根据依赖关系，安装所有的包
rpm -ivh yum-3.2.19-18.el5.centos.noarch.rpm
warning: yum-3.2.19-18.el5.centos.noarch.rpm: Header V3 DSA signature: NOKEY, key ID e8562897
error: Failed dependencies:
yum-rhn-plugin < 0.5.2-1.el5 conflicts with yum-3.2.19-18.el5.centos.noarch
此包可以不安装，加个--nodeps参数直接安装yum
一样可以正常使用yum更新，但都是用centos的源
---------------------
mkdir yum;cd yum;wget http://...198/rhel_yum_soft.tar.gz;tar zxvf rhel_yum_soft.tar.gz;rpm -ivh *.rpm;cp CentOS-Base.repo
/etc/yum.repos.d/;cd ..;rm -fr yum;yum update -y udev;
