yum/rpmbuild的安装
red9下的yum安装：
1月2日redhat9.0上安装yumrpm -Uvh http://ftp.freshrpms.net/pub/freshrpms/redhat/9/yum/yum-2.0.4-1.rh.fr.i386.rpm
自动安装rpmbuild
yum install rpm-build
?
安装完成rpmbuild源后（可能需要较长时间），再
wget archive.download.redhat.com/pub/redhat/linux/9/en/os/i386/RedHat/RPMS/rpm-build-4.2-0.69.i386.rpm
安装 rpm -ivh rpm-build-4.2-0.69.i386.rpm
?
ok，yum和rpmbuild安装完毕。