RedHat5运用yum命令安装软件

1.卸载系统自带yum

rpm -qa|grep yum|xargs rpm -e --nodeps 

2.远程下载yum 包
wget  http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-metadata-parser-1.1.2-3.el5.centos.i386.rpm
wget  http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-fastestmirror-1.1.16-16.el5.centos.noarch.rpm
wget  http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-3.2.22-37.el5.centos.noarch.rpm

3.安装新的yum
rpm -ivh *.rpm

4.下载并配置yum本地缓存

wget http://docs.linuxtone.org/soft/lemp/CentOS-Base.repo
mv CentOS_Base.repo /etc/yum.repos.d/CentOS-Base.repo
yum makecache

4.使用yum命令

yum -y install gcc