How to configure yum source in CentOS system

  
                

In the CentOS system, yum can help users install packages in batches without having to unpack the installation one by one. Of course, the CentOS yum source is configured before this. So how to configure the yum source in the CentOS system?

Step one: Uninstall the original yum

[root @ localhost home] #rpm -qa

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