每次講課都要配置yum，很麻煩，自己總接了一下，寫了個腳本，一鍵完成。
把它當作系統安裝剛安裝完成後的優化，是很不錯的。
不廢話了，上腳本
[root@localhost ~]# vi yum_config.sh
#!/bin/bash
#by scfa 2015-08-01
############install base tools#########
echo "############################"
echo "make sure you can access internet."
yum -y install wget lftp yum-plugin-priorities 1>/dev/null &&echo "tools install ok."
##########backup repo file#########
echo "############################"
repo_d=/etc/yum.repos.d
cd $repo_d
if [ ! -e $repo_d/rbak ];then
mkdir $repo_d/rbak
mv $repo_d/*.repo $repo_d/rbak
fi
###########config 163.repo ###############
echo "############################"
m_163="CentOS6-Base-163.repo"
echo "config mirrors.163.com repo now."
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo &>/dev/null
if [ -e /etc/repos.d/$m_163 ];then
sed -i -e "s/\]$/\]\npriority=1/g" /etc/yum.repos.d/$m_163
echo "163.repo is ok."
fi
#############config epel Repository##########
echo "############################"
echo "config epel-release repo now."
yum -y install epel-release >/dev/null &&echo "epel-relase install ok."
sed -i -e "s/\]$/\]\npriority=5/g" /etc/yum.repos.d/epel.repo
sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/epel.repo
EPEL_F="/etc/yum.repos.d/epel.repo"
if [ ! -z "$(grep priority $EPEL_F)" -a ! -z "$(grep 0 $EPEL_F)" ];then
echo "epel repo priority is 5."
echo "epel usage:yum --enablerepo=epel install [package]."
fi
#############config rpmforge repository#############
echo "############################"
echo "config rpmforge repo now."
yum -y install http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm 1>/dev/null&&echo "rpmforge install ok."
sed -i -e "s/\]$/\]\npriority=10/g" /etc/yum.repos.d/rpmforge.repo
sed -i -e "s/enabled = 1/enabled = 0/g" /etc/yum.repos.d/rpmforge.repo
RPMFORGE_F="/etc/yum.repos.d/rpmforge.repo"
if [ ! -z "$(grep priority $RPMFORGE_F)" -a ! -z "$(grep 0 $RPMFORGE_F)" ];then
echo "rpmforge priority is 10."
echo "rpmforge usage:yum --enablerepo=rpmforge install [package]."
fi
:wq
chmod +x yum_config.sh
./yum_config.sh