To install the duplicity RPM (Red Hat Package Manager) package on a Red Hat, CentOS, or Fedora Core Linux system, you can use the yum package manager and the install subcommand.
First, make sure that the epel-release repository is enabled on your system. You can enable it by installing the epel-release package using the following command:
sudo yum install epel-release
Next, use the yum command to install duplicity:
sudo yum install duplicity
This will install duplicity and all the necessary dependencies.
Once duplicity is installed, you can use it to create and manage encrypted backups of your files. You can find more information about how to use duplicity in the documentation.
It's always a good idea to carefully review the documentation and use the appropriate commands to install and configure duplicity on your system. This will help ensure that you have a reliable and secure way to back up your files.