Linux Learning Notes (22) Yum change domestic source, yum download rpm package, source package installation

First, yum change domestic source
First of all

cd /etc/yum.repos.d/rm -f dvd.repo

Delete the previously added local repository and restore the original warehouse back

cp  /etc/yum.repos.d.bak/*  /etc/yum.repos.d/cp  ../yum.repos.d.bak/*   .

The above two commands are all possible, the second one is used under practice: And.
LS View file list, delete Centos-base.repo

rm -rf CentOS-Base.repo

Create a domestic source

wget http://mirrors.163.com/.help/CentOS7-Base-163.repo

Since the wget was not installed, Yum could not be used to install wget because the Yum source was deleted.
You can install a new source with the following command

curl -O http://mirrors.163.com/.help/CentOS7-Base-163.repo`

Yum List

Yum Install zsh

If you change the name of Centos7-base-163.repo, the Yum command will not work.

Execute Yum repolist all
will find that all RPM packages are not available

Linux Learning Notes (22) Yum change domestic source, yum download rpm package, source package installation