To use rpmforge-release on CentOS, follow these steps:

1. Open a terminal or SSH into your CentOS server.

2. Download the rpmforge-release package by running the following command:

wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm

Note: Replace the URL with the appropriate version for your CentOS release.

3. Install the rpmforge-release package by running the following command with root privileges:

sudo rpm -Uvh rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm

Note: Again, replace the package name with the appropriate version.

4. After the installation is complete, you can verify that the rpmforge repository is enabled by running the following command:

sudo yum repolist

The output should include the rpmforge repository.

5. Now you can use the rpmforge repository to install software packages using the yum command. For example, to install the htop package, run the following command:

sudo yum install htop

Note: You can replace htop with any other package name you want to install.

That’s it! You have successfully set up and used rpmforge-release on CentOS.