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版块：通知公告类型：普通作者：小绿叶技术博客查看：2994 回复：0 获赞：0 时间：2022-01-16 15:34:38

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#!/bin/bashcentos6d(){release=`cat /etc/redhat-release |grep release | awk -F" " '{print $3}' | awk -F"." '{print $1}'` ; echo "centos 版本为： $release "case "$release" in"6") echo " 当前匹配centos 版本为 6"repo="/etc/yum.repos.d/centos6-epel.repo"if [ ! -e $repo ]; then # -e 判断文件存在；参考：Shell if 条件判断文件或目录yum install -y wgetcd /etc/yum.repos.d/mkdir bakmv * bakwget work.eisc.cn/ruanjian/rpm/yumrepo/centos6-epel.repowget work.eisc.cn/ruanjian/rpm/yumrepo/centos6.repoyum clean all # 清除原有缓存yum makecache # 生成新的缓存 # make cache [me?k] [ka?] 制作缓存{ka xi}yum list # 校验yumcdelseecho "yum已经切换"fi;;*) echo "低版本未匹配到，正在匹配红帽版本配置yum ！！！"redhat8d;;esac}

centos7(){repo="/etc/yum.repos.d/epel-7.repo"if [ ! -e $repo ]; then # -e 判断文件存在；参考：Shell if 条件判断文件或目录yum install -y wgetcd /etc/yum.repos.d/mkdir bakmv * bakwget work.eisc.cn/ruanjian/rpm/yumrepo/Centos-7.repowget work.eisc.cn/ruanjian/rpm/yumrepo/epel-7.repo# wget http://mirrors.aliyun.com/repo/Centos-7.repo# wget http://mirrors.aliyun.com/repo/epel-7.repo # 移动两个文件到目录#wget http://mirrors.163.com/.help/CentOS7-Base-163.repo#sed -i 's/$releasever/7/g' /etc/yum.repos.d/CentOS-Base.repo# sed -i 's/$releasever/7/g' /etc/yum.repos.d/*
# yum源没有对应版本包匹配；修改yum为centos7yum clean all # 清除原有缓存yum makecache # 生成新的缓存 # make cache [me?k] [ka?] 制作缓存{ka xi}yum list # 校验yumcdelseecho "yum已经切换"fi}centos8(){
repo="/etc/yum.repos.d/Centos-8.repo"if [ ! -e $repo ]; thencd /etc/yum.repos.d/mkdir bakmv * bak
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo#sed -i 's/$releasever/8/g' /etc/yum.repos.d/CentOS-Base.repoyum install -y https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpmwget -O /etc/yum.repos.d/epel8.repo work.eisc.cn/ruanjian/rpm/yumrepo/epel8.repo#sed -i 's|^#baseurl=https://download.fedoraproject.org/pub|baseurl=https://mirrors.aliyun.com|' /etc/yum.repos.d/epel*#sed -i 's|^metalink|#metalink|' /etc/yum.repos.d/epel*
yum clean all #清理缓存yum makecache #更新源elseecho "yum已经切换"fi}
redhat8d(){release=`cat /etc/redhat-release |grep release | awk -F" " '{print $6}' | awk -F"." '{print $1}'` ; echo "redhat 版本为： $release "case "$release" in"8") echo " 当前匹配redhat 版本为 8"
repo="/etc/yum.repos.d/Centos-8.repo"if [ ! -e $repo ]; thencd /etc/yum.repos.d/mkdir bakmv * bak
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo#sed -i 's/$releasever/8/g' /etc/yum.repos.d/CentOS-Base.repoyum install -y https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpmwget -O /etc/yum.repos.d/epel8.repo work.eisc.cn/ruanjian/rpm/yumrepo/epel8.repo#sed -i 's|^#baseurl=https://download.fedoraproject.org/pub|baseurl=https://mirrors.aliyun.com|' /etc/yum.repos.d/epel*#sed -i 's|^metalink|#metalink|' /etc/yum.repos.d/epel*yum clean all ; yum makecache ; yum listelseecho "yum已经切换"fi;;*) echo "红帽版本未匹配到，退出！！！";;esac}

release=`cat /etc/redhat-release |grep release | awk -F" " '{print $4}' | awk -F"." '{print $1}'` ; echo "centos 版本为： $release "case "$release" in"6") echo " 当前匹配centos 版本为 6"centos6;;"7") echo " 当前匹配centos 版本为 7"centos7;;"8") echo "当前匹配centos 版本为 8"centos8;;*) echo "您的centos过于老旧，正在匹配低版本"centos6d;;esac# centos 6 切换yum： https://help.aliyun.com/document_detail/193569.htm# 一键切换yum执行： wget www.eisc.cn/file/shell/centos-yum.sh ; sh centos-yum.sh# 感谢网友提供yum解决方案：https://developer.aliyun.com/article/748336# 阿里巴巴开源镜像站，镜像仓库: https://developer.aliyun.com/mirror/# 阿里云linux系统镜像： https://mirrors.aliyun.com/centos-vault/

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