描述
CentOS，是基于 Red Hat Linux 提供的可自由使用源代码的企业级 Linux 发行版本；是一个稳定，可预测，可管理和可复制的免费企业级计算平台。
更换yum源
备份
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| mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
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CentOS 6
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| wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
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CentOS 7
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| wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
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CentOS 8
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| wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo
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缓存&更新
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| yum clean all
yum makecache
yum update
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更换pip源
临时使用;
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| pip install some-package -i https://mirrors.aliyun.com/pypi/simple/
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设为默认;
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| pip install pip -U
pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/
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pip源；
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| # 豆瓣
https://pypi.doubanio.com/simple/
# 阿里云
https://mirrors.aliyun.com/pypi/simple/
# 清华大学
https://pypi.tuna.tsinghua.edu.cn/simple/
https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple/
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