Install Repoforge (RPMforge) on CentOS
To install RPMforge on CentOS system, you can follow the steps below:
- Firstly, log in to your CentOS system as the root user.
 - Make sure your system has the wget command installed. If it is not installed, you can use the following command to install it:
 - install wget using yum
 - Download and import the GPG key for RPMforge, then execute the following command:
 - Import the RPM-GPG-KEY.dag.txt key from http://apt.sw.be.
 - Download the RPMforge installation script that is suitable for your CentOS version and run the following command:
 - Download the rpmforge-release package version 0.5.3-1 for x86_64 architecture from the repoforge repository by using the wget command.
 - Note: The URL in the above command may need to be modified according to your CentOS version and architecture.
 - To install the downloaded RPMforge installation script, run the following command:
 - Install the RPMForge release version 0.5.3-1 for x86_64 architecture on CentOS 8.
 - Please replace rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm in the command with the actual filename you downloaded.
 - After installation is complete, you can use the yum command to install software packages, such as:
 - Install the PACKAGE_NAME using yum.
 
By following the above steps, you can successfully install RPMforge on CentOS system and use yum to install software packages.