初始化linux自带的python和yum

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该博客详细介绍了如何在Linux环境中手动卸载Python和Yum，包括使用rpm命令删除相关包及残留文件，然后下载特定版本的Python和Yum的rpm文件并进行安装的完整过程。

第一步：

1、删除python

# rpm -qa|grep python|xargs rpm -ev --allmatches --nodeps ##强制删除已安装程序及其关联

# whereis python |xargs rm -frv ##删除所有残余文件 ##xargs，允许你对输出执行其他某些命令

# whereis python ##验证删除，返回无结果

2、删除现有的yum

# rpm -qa|grep yum|xargs rpm -ev --allmatches --nodeps

# whereis yum |xargs rm -frv

# whereis yum ##验证删除，返回无结果

第二步：下载安装包

查看linux红帽子版本cat /etc/redhat-release

根据版本号在下面两个网址找相应的rpm文件进行下载。

1、（可替换网址 Index of /7.7.1908/os/x86_64/Packages）

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/libxml2-python-2.9.1-6.el7_2.3.x86_64.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-2.7.5-86.el7.x86_64.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python2-rpm-macros-3-32.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-backports-1.0-8.el7.x86_64.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-backports-ssl_match_hostname-3.5.0.1-1.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-chardet-2.2.1-3.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-devel-2.7.5-86.el7.x86_64.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-ipaddress-1.0.16-2.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-kitchen-1.1.1-5.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-libs-2.7.5-86.el7.x86_64.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-rpm-macros-3-32.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-setuptools-0.9.8-7.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-srpm-macros-3-32.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/python-urlgrabber-3.10-9.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/rpm-python-4.11.3-40.el7.x86_64.rpm

2、

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/yum-3.4.3-163.el7.centos.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/yum-plugin-aliases-1.1.31-52.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-52.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/yum-plugin-protectbase-1.1.31-52.el7.noarch.rpm

wget http://ftp.iij.ad.jp/pub/linux/centos-vault/7.7.1908/os/x86_64/Packages/yum-utils-1.1.31-52.el7.noarch.rpm